Practice Test


Q1) Which is an ore of potassium ? Show Answer


Q2) Which of the following is radioactive ? Show Answer


Q3) Alkali metals impart color to Bunsen flame due to Show Answer


Q4) Which one of the following properties of alkali metals increase in magnitude as the atomic number rises ? Show Answer


Q5) The process associated with sodium carbonate manufacture is known as Show Answer


Q6) Compared with the alkaline earth metals, the alkali metals exhibit Show Answer


Q7) Strongest bond is between Show Answer


Q8) Molten sodium chloride conducts electricity due to the presence of Show Answer


Q9) Microcosmic salt is Show Answer


Q10) Which of the following has lowest thermal stability? Show Answer


Q11) Sodium reacts with water more vigorously than lithium because Show Answer


Q12) Which of the following properties is not true for an alkali metal ? Show Answer


Q13) Sodium chloride imparts golden yellow color to the Bunsen flame. This can be interpreted due to Show Answer


Q14) Which of the following compound is used in gun powder ? Show Answer


Q15) Which of the following statement is false regarding saline hydrides ? Show Answer


Q16) With the increasing in atomic weights, melting points of the alkali metals Show Answer


Q17) Which of the following statement is incorrect ? Show Answer


Q18) Which one of the following has highest electropositive character ? Show Answer


Q19) Which of the following has highest melting point? Show Answer


Q20) Which of the following electronic configurations corresponds to an element with lowest ionization energy ? Show Answer


Q21) Alkali metal that react with nitrogen directly to form nitride is Show Answer


Q22) oxone is Show Answer


Q23) Which of the following has lowest melting point ? Show Answer


Q24) On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which one of the following does not occur Show Answer


Q25) Photoelectric effect is maximum in Show Answer


Q26) Backing soda is Show Answer


Q27) Which of the following ions forms a hydroxide highly soluble in water ? Show Answer


Q28) Which of the following carbonate decompose on heating ? Show Answer


Q29) Which of the following are arranged in correct increasing order of solubilities ? Show Answer


Q30) When sodium chloride is dissolved in water, sodium ion is Show Answer


Q31) Which of the following atoms will have the smallest size? Show Answer


Q32) Which of the following compounds has the lowest anion to cation size ration ? Show Answer


Q33) The properties of lithium are similar to those of Mg. This is because Show Answer


Q34) A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of Show Answer


Q35) Salt used for performing bead test in qualitative inorganic analysis is Show Answer


Q36) The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to Show Answer


Q37) Which of the following has largest size ? Show Answer


Q38) Which of the following statement is false for alkali metals? Show Answer


Q39) A combustible gas is liberated when caustic soda solution is heated with Show Answer


Q40) Caesium oxide will be Show Answer


Q41) Lithium shows diagonal relationship with Show Answer


Q42) In certain respects, lithium differs from other alkali metals.The main reason for this is Show Answer


Q43) When a substance A reacts with water it produces combustible gas B and a solution C in water.When another substance D reacts with this solution of C,it also produces the same gas B even on reaction with dilute sulphric acid at room temperature. A imparts a deep golden yellow color to a smokeless flame of Bunsen burner.A,B.C and D respectively are Show Answer


Q44) Anhydrous mixture of KF and HF contains which type of ions? Show Answer


Q45) The increasing order of atomic radius for the element Na, Rb,K and Mg is Show Answer


Q46) In organic reactions, sodium in liquid ammonia is used as...... Show Answer


Q47) When sodium is treated with sufficient oxygen/air, the product obtained is Show Answer


Q48) Which of the following is monovalent ? Show Answer


Q49) When washing soda is heated Show Answer


Q50) Potassium is kept in Show Answer


Q51) Chile saltpetre is Show Answer


Q52) sodium metal cannot be stored under Show Answer


Q53) Which is manufactured by electrolysis of fused NaCl? Show Answer


Q54) Caustizisation process is used for the preparation of Show Answer


Q55) Baking powder Has one of the following constituents Show Answer


Q56) Which one of the following has minimum value of cation/anion ratio ? Show Answer


Q57) The following are some of the methods commonly employed for the extraction of metal from their ores. Which of the following methods is generally employed for the extraction of sodium ? Show Answer


Q58) In Solvay ammonia process, sodium bicarbonate is precipitated due to Show Answer


Q59) Which compound will show the highest lattice energy? Show Answer


Q60) The reactivity of the alkali metal sodium with water, is made use of Show Answer


Q61) The alkali metals Show Answer


Q62) Identify the correct statement Show Answer


Q63) The Stability of the following alkali metal chlorides follows the order Show Answer


Q64) Which of the following reacts with water at high rate Show Answer


Q65) When NaOH is made, the gas released at the cathod is Show Answer


Q66) Which of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate Show Answer


Q67) In view of their low ionization energies, the alakali metals are Show Answer


Q68) Aqueous NaCl solution is electrolyzed using platinum electrodes. What is the product formed at cathode? Show Answer


Q69) Super oxide of potassium is Show Answer


Q70) NaOH is prepared by the method Show Answer


Q71) Which of the following is correct ? Show Answer


Q72) The formula of nitre is Show Answer


Q73) Which causes nerve signals in animals? Show Answer


Q74) Select correct statement Show Answer


Q75) The alkali metals readily dissolve in liquid ammonia to give solution which are blue in color, if dilute. The blue color is believed to be due to Show Answer


Q76) Select correct statement Show Answer


Q77) Which of the following alkali metal hydroxides is the strongest base ? Show Answer


Q78) Which of the following oxides is formed when potassium metal is burnt excess air ? Show Answer


Q79) Sodium conduct electricity because Show Answer


Q80) The strongest reducing agent out of Na, K, Rb and Cs is Show Answer


Q81) Alkali metals are generally extracted by Show Answer


Q82) Which one of these is basic ? Show Answer


Q83) Which one of these is most reactive ? Show Answer


Q84) Which one of the elements reacts directly with nitrogen to form nitride ? Show Answer


Q85) Which of the following is known as fusion mixture ? Show Answer


Q86) Which of the following has the highest solubility product ? Show Answer


Q87) Which is the weakest reducing agent ? Show Answer


Q88) Which of the following sets can be called isoelectronic species ? Show Answer


Q89) Alkali metal display hydrogen from water forming bases due to the reason that Show Answer


Q90) Which of the following has the highest conductivity ? Show Answer


Q91) Crystalline sodium chloride is bad conductor of electricity because Show Answer


Q92) Which of the following does not illustrate the ammonia properties of Li? Show Answer


Q93) The valence shell electronic configuration of alkali metals is Show Answer


Q94) Which of the following has the least ionization potential ? Show Answer


Q95) An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt carbonate is a salt of Show Answer


Q96) Which of the following is a man made element ? Show Answer


Q97) Fires that result from the combustion of alkali metals can be extinguish by Show Answer


Q98) On heating sodium metal in a current of dry ammonia, the compound formed is Show Answer


Q99) Which of the following alkali metal ions has lowest ionic mobility in aqueous solution ? Show Answer


Q100) Which one of the following metallic hydroxides does not dissolve hydroxide solution ? Show Answer


Q101) Smallest among these species is Show Answer


Q102) How does the ionization energy of first group elements vary ? Show Answer


Q103) The ionic conductance of following cation in a given concentration is in the order Show Answer


Q104) Lithium is strong reducing agent among alkali metals due to which of the following factor ? Show Answer


Q105) Nitrogen dioxide cannot be prepared by heating Show Answer


Q106) Molecular formula of Glauber's salt is Show Answer


Q107) The pair of compound which cannot exist together in solution is Show Answer


Q108) The metallic luster exhibited by solution is explained by Show Answer


Q109) An aqueous solution of sodium sulphate is electrolysed using inert electrodes. The products at the cathode and anode are respectively Show Answer


Q110) Sodium Sulphate is soluble in water but barium sulphate is sparing soluble because Show Answer


Q111) A fire of lithium, sodium and potassium can be extinguished by Show Answer


Q112) On strong heating sodium bicarbonate changes into Show Answer


Q113) Which of the following acts as an oxidising as well as reducing agent ? Show Answer


Q114) Among alkali metal salts, the lithium salts are the poorest conductor of electricity in aqueous solution because of Show Answer


Q115) Brine solution on electrolysis will not give Show Answer


Q116) The ionic mobility of alkali metal ions in aqueous solution is maximum for Show Answer


Q117) The compound(s) formed upon combustion of sodium metal in excess air is(are) Show Answer


Q118) Which one of the alkaline earth metals shows some anomalous behaviour and has the same electronegativity as aluminium? Show Answer


Q119) Which of the following carbonates decomposes on heating ? Show Answer


Q120) Magnesium keeps on burning in Show Answer


Q121) Which of the following are arranged in correct increasing order of solubilities ? Show Answer


Q122) Which of the following is different from the other three oxides ? Show Answer


Q123) Which of the following has highest electrode potential ? Show Answer


Q124) Which of the following is true for magnesium ? Show Answer


Q125) Which of the following has correct increasing basic strength ? Show Answer


Q126) The most electropositive among the alkaline earth metals is Show Answer


Q127) The descending order of the second ionization potential of Mg, Ca, and Ba is Show Answer


Q128) All the following substance react with water. The pair that gives the same gaseous product is Show Answer


Q129) Among the following oxides, the one which is most basic is Show Answer


Q130) A metal salt solution forms a yellow precipitate with potassium chromate in acetic acid, a white precipitate with dilute sulphuric acid but gave no precipitate with sodium chloride or iodide. The white precipitate obtain when sodium carbonate is added to the salt solution will consist of Show Answer


Q131) Which of the alkaline earth metals is the strongest reducing agent? Show Answer


Q132) White enamel of our teeth contain Show Answer


Q133) The correct order of increasing ionic character is Show Answer


Q134) The first ionization potential (eV) of Be and Ba respectively are Show Answer


Q135) The compound of alkaline earth metal have the following magnetic nature Show Answer


Q136) Mg is an important component of which biomolecule occurring extensively in living world ? Show Answer


Q137) Which of the following has maximum ionization energy? Show Answer


Q138) As the alkaline earth metals (except Be) tend to lose their valence electron readily, they act as Show Answer


Q139) Which is insoluble in water? Show Answer


Q140) Thermal stability of alkaline earth metal carbonates decrease in the order Show Answer


Q141) Which one of the following statement is correct for alkaline earth metals? Show Answer


Q142) The alkaline earth metals Ba, Sr, Ca and Mg may be arranged in the order of their decreasing first ionisation potential as Show Answer


Q143) Melting point of calcium halides decrease in the order Show Answer


Q144) Which of the following will liberate hydrogen by its reaction with hydrochloric acid ? Show Answer


Q145) Which of the following statement is false ? Show Answer


Q146) The solubility of sulphates in water, down the B e group is Be > Mg > Ca > Sr > Ba. This is due to Show Answer


Q147) Metals belonging to the same group in the periodic table are Show Answer


Q148) The number of covalent bonds formed by beryllium is Show Answer


Q149) A major constituent of portland cement (except lime) is Show Answer


Q150) Setting of cement is an Show Answer


Q151) Which of the following is commonly used in a laboratory dessicator ? Show Answer


Q152) The wire of flash bulb is made up of Show Answer


Q153) In India at he occasion of marriages, the fire works give green flame. which one of the following radical may be present ? Show Answer


Q154) Plaster of Pairs hardens by Show Answer


Q155) Epsom salt is the hydrate of one of the following Show Answer


Q156) Which of the following substance is used in the laboratory for fast drying of neutral gases ? Show Answer


Q157) Which of the following metal ions plays an important role in muscle contraction ? Show Answer


Q158) Presence of which of the following salts increase the rate of setting of plaster of Paris ? Show Answer


Q159) Identify the correct statement Show Answer


Q160) Calcium is obtained by the Show Answer


Q161) The difference of water molecules in gypsum and plaster of Paris is Show Answer


Q162) Plaster of Paris is used Show Answer


Q163) On heating quick lime with coke in an electric furnace, we get Show Answer


Q164) Initial setting of cement is mainly due to Show Answer


Q165) As the nuclear increase from neon to calcium, the orbital energies Show Answer


Q166) Carnallite on electrolysis give Show Answer


Q167) Setting of plaster of Paris involves Show Answer


Q168) Out of the following elements which one do you expect to be most reactive chemically? Show Answer


Q169) Portland cement is manufactured by using Show Answer


Q170) Which of the following sulphates has higher solubility in water? Show Answer


Q171) The chemical composition of plaster of Paris is Show Answer


Q172) Which of the following compound of cement sets at the slowest rate ? Show Answer


Q173) Melting point is lowest for Show Answer


Q174) Which of the following imparts brick red colour to the flame ? Show Answer


Q175) Magnesium can be obtained by Show Answer


Q176) Which of the following is the strongest base ? Show Answer


Q177) Limestone is not used in which of the following manufacturing processes ? Show Answer


Q178) Blanc fire used in paints is Show Answer


Q179) The formula of calcium cyanamide is Show Answer


Q180) A firework gives out crimson colored light. It contains a salt of Show Answer


Q181) The carbide of which of the following metals on hydrolysis given allylene or propyne ? Show Answer


Q182) Which of the following show high tendency to form a peroxide? Show Answer


Q183) Which of the following has the lowest melting point ? Show Answer


Q184) Which of the following on thermal decomposition yield a basic as well as an acidic oxide ? Show Answer


Q185) From which mineral Ra is obtained Show Answer


Q186) Salt used as a purgative is Show Answer


Q187) Ra is placed at the bottom of alkaline earth metals. The element should Show Answer


Q188) Mortar is mixture of Show Answer


Q189) Which alkaline earth metal nitride is volatile? Show Answer


Q190) Which chloride is covalent and soluble in ether? Show Answer


Q191) Celestite is an ore of Show Answer


Q192) Gypsum is added to clinker during cement manufacture to Show Answer


Q193) Which ion forms hydroxide easily soluble in water? Show Answer


Q194) Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect ? Show Answer


Q195) Barium is extracted from its ore Show Answer


Q196) Which alkaline earth metal forms complex salts ? Show Answer


Q197) In order to differentiate between the metals A and B, it has been observed that both oxide but B also forms nitride, When both burn in air. So A and B are Show Answer


Q198) Among the metals Be, Mg, Ca and Sr of group 2(or group IIA) of the periodic table, the least ionic chloride would be formed by Show Answer


Q199) Which of the following salts does not impart a color to the flame ? Show Answer


Q200) Which of the following is least soluble in water ? Show Answer


Q201) Dolomite has the Composition Show Answer


Q202) Alkaline earth metals form ions of the general formula Show Answer


Q203) The one which does not show variable valency is Show Answer


Q204) The Characteristic outer electronic configuration of alkaline earth metals is Show Answer


Q205) Which one is not dissolved by dilute hydrochloric acid is Show Answer


Q206) A chloride dissolved appreciably in cold water. when placed on a Pt wire in Bunsen flame, no distinctive color is noted which cation could be present ? Show Answer


Q207) The right order of solubility of sulphates of alkaline earth metals in water is Show Answer


Q208) The first ionization energies of alkaline earth metals are higher than those of the alkali metals. This is because Show Answer


Q209) Among the alkaline earth metals, the element forming predominantly covalent compound is Show Answer


Q210) Which of the following is incorrect? Show Answer


Q211) In curing cement plaster, water is sprinkled from time to time. This helps in Show Answer


Q212) Several blocks of magnesium are fixed to the bottom of a ship to Show Answer


Q213) The solubility of carbonates decrease down the magnesium group due to decrease in Show Answer


Q214) The compound insoluble in acetic acid is Show Answer


Q215) Property of the alkaline earth metals that increase with their atomic number is Show Answer


Q216) The set representing the correct order of first ionization potential is Show Answer


Q217) Which of the following process is used in the extractive metallurgy magnesium ? Show Answer


Q218) For two ionic solids CaO and KI, Identify the wrong statement among the following ? Show Answer


Q219) The number and type of bonds between two carbon atoms in calcium carbide are Show Answer


Q220) When chlorine is passed through concentrated solution of KOH, the compound formed is: Show Answer


Q221) Which of the following does not illustrate the anomalous properties of lithium? Show Answer


Q222) Statement 1 : Gypsum is added to cement to increase its rate of setting.
Statement 2 : Gypsum is calcium sulphate hemihydrates. Show Answer


Q223) A white solid reacts with dil. HCl to give colourless gas that decolourises aqueous bromine. The solid is most likely to be: Show Answer


Q224) Statement 1 : Radium is most abundant s block elements.
Statement 2 : S block elements are non radioactive in nature. Show Answer


Q225) Out of the following metals that cannot be obtained by electrolysis of the aqueous solution of is salts is Show Answer


Q226) Statement 1 : Group 1 elements are known as the alkali elements.
Statement 2 : S orbital can accommodate only two electrons. Show Answer


Q227) The correct increasing covalent character is: Show Answer


Q228) Statement 1 : S block elements are highly electropositive.
Statement 2 : The valance electrons present in s orbital are loosely held. Show Answer


Q229) Portland cement has ….in its composition: Show Answer


Q230) The reaction of sodium with water is highly exothermic. The rate of reaction is lowered by: Show Answer


Q231) Which of the following carbonates decomposes at lowest temperature? Show Answer


Q232) Which out of the following compounds is called photographer's fixer? Show Answer


Q233) The metal present in Grignard reagent is: Show Answer


Q234) The characteristic not related to alkali metal is Show Answer


Q235) A colourless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is: Show Answer


Q236) Which possesses highest lattice energy? Show Answer


Q237) Hypo is used in: Show Answer


Q238) Which of the following has the largest size in aqueous solution? Show Answer


Q239) On prolonged exposure to air, sodium finally changes to: Show Answer


Q240) Which of the following is an epsom salt? Show Answer


Q241) Which of the following statements are correct for alkali metal compounds?
(i) Superoxides are paramagnetic in nature.
(ii) The basic strength of hydroxides increases down the group.
(iii) The conductivity of chlorides in their aqueous solutions decreases down the group.
(iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis. Show Answer


Q242) Flash bulbs contain wire or foil of Mg packed in an atmosphere of: Show Answer


Q243) The main product obtained when a solution of sodium carbonate reacts with mercuric chloride is Show Answer


Q244) Which on mixing with water gives a hissing sound and becomes very hard? Show Answer


Q245) Milk of magnesia is: Show Answer


Q246) What would you observe if excess of dilute NaOH solution is added and shaken with an aqueous solution of aluminium chloride? Show Answer


Q247) Molecular formula of Glauber's salt is Show Answer


Q248) Ca on exposure in moist air forms a layer on surface of: Show Answer


Q249) Which of the following is different from the other three? Show Answer


Q250) Dead burnt is: Show Answer


Q251) Salt used as a purgative is: Show Answer


Q252) Tin dissolves in boiling caustic soda solution because of the formation of soluble: Show Answer


Q253) Alkali metals contain: Show Answer


Q254) The wire of flash bulbs are made up of: Show Answer


Q255) Addition of excess of sodium hydroxide solution to a solution of nickel sulphate results in the formation of a: Show Answer


Q256) Several blocks of Mg are fixed to the bottom of a ship to: Show Answer


Q257) Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because: Show Answer


Q258) Baking soda is: Show Answer


Q259) NaCl crystals possesses: Show Answer


Q260) The carbonate that will not decompose on heating is Show Answer


Q261) Which statement is false for alkali metals? Show Answer


Q262) When washing soda is heated Show Answer


Q263) Most abundant salt of sodium in nature is: Show Answer


Q264) Which one of the following substances is used in the laboratory for a fast drying of neutral gases? Show Answer


Q265) Which alkaline earth metal forms peroxide on burning in air? Show Answer


Q266) Sodium metabisulphite is not: Show Answer


Q267) In the manufacture of sodium hydroxide, byproduct obtained is: Show Answer


Q268) Which of the following substances is used in the laboratory for fast drying of neutral gases? Show Answer


Q269) Alkaline earth metal oxide having the co-ordination number four is: Show Answer


Q270) Sodium thiosulphate is a Show Answer


Q271) What are the products formed when an aqueous solution of magnesium bicarbonate is boiled? Show Answer


Q272) Alkaline earth metal salts are: Show Answer


Q273) Molten NaCl conducts electricity due to the presence of: Show Answer


Q274) The oxide of which metal is most stable to heat? Show Answer


Q275) A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of Show Answer


Q276) Alkali metals are characterised by: Show Answer


Q277) Which has lowest thermal stability? Show Answer


Q278) When NaCl is dissolved in water, the sodium ions become: Show Answer


Q279) In which of the following, sodium carbonate is not used? Show Answer


Q280) The difference of water molecules in gypsum and plaster of Paris is Show Answer


Q281) Alkaline earth metals are not found free in nature because of their: Show Answer


Q282) A radioactive element X decays giving two inert gases is: Show Answer


Q283) The principal products obtained on heating iodine with concentrated caustic soda solution are: Show Answer


Q284) The chloride ion is isoelectronic with potassium. The size of chloride ion is: Show Answer


Q285) Which of the alkali metal chloride is expected to have highest m.p.? Show Answer


Q286) On heating sodium metal in a current of dry ammonia gas the compound formed is: Show Answer


Q287) NaOCl is used as a bleaching agent and sterilising agent. It can be synthesised by the action of Show Answer


Q288) Most powerful reducing agent is Show Answer


Q289) The compound insoluble in acetic acid is: Show Answer


Q290) The ionic conductance is least for Show Answer


Q291) Sodium carbonate contains: Show Answer


Q292) A sudden large jump between the values of second and third ionization energies of an element would be associated with the electronic configuration: Show Answer


Q293) Which of the following reacts with water with high rate? Show Answer


Q294) Beryl is: Show Answer


Q295) Sodium chloride is known as: Show Answer


Q296) Soda lime is Show Answer


Q297) Lithopone is a mixture of: Show Answer


Q298) Which of the following is not known? Show Answer


Q299) Alkali metal chloride soluble in pyridine is: Show Answer


Q300) The characteristic colours given by calcium, strontium and barium in the flame test are respectively Show Answer


Q301) The first ionization energies of alkaline earth metals are higher than those of the alkali metals. This is because: Show Answer


Q302) NaOH is prepared by the method: Show Answer


Q303) Sodium thiosulphate is formed when: Show Answer


Q304) Commonly used laboratory desiccant is: Show Answer


Q305) An aqueous solution of KI does not give a precipitate with: Show Answer


Q306) Both Be and Al become passive on reaction with conc. Nitric acid due to: Show Answer


Q307) Sodium peroxide which is a yellow solid, when exposed to air becomes white due to the formation of Show Answer


Q308) The metal, that is extracted from sea water is: Show Answer


Q309) Sedimentary rocks laid down under water mainly contain: Show Answer


Q310) The salts of which alkaline earth metal are used in the form of manure? Show Answer


Q311) Potash alum is used in purification of water because: Show Answer


Q312) Which has maximum electropositive character? Show Answer


Q313) The main constituent of bones is: Show Answer


Q314) Which one of the following reactions occur at the anode, in the Castner process of extracting sodium metal? Show Answer


Q315) Mortar is a mixture of: Show Answer


Q316) Sodium cannot be extracted by the electrolysis of brine solution because: Show Answer


Q317) Calcium is obtained by Show Answer


Q318) The function of sand in mortar is: Show Answer


Q319) The most homogeneous family in periodic table is of: Show Answer


Q320) Which is most basic in character? Show Answer


Q321) On strong heating sodium bicarbonate changes into Show Answer


Q322) Mg keeps on burning in: Show Answer


Q323) Baking soda or baking powder is: Show Answer


Q324) Fusion mixture is comprised of: Show Answer


Q325) The most basic oxide among the following is: Show Answer


Q326) Which of the following will liberate hydrogen by its reaction with hydrochloric acid? Show Answer


Q327) Bleaching powder is obtained by treating chlorine with Show Answer


Q328) Baking powder contains Show Answer


Q329) Siedlitz powder contains: Show Answer


Q330) Sodium bicarbonate is manufactured by: Show Answer


Q331) In the hardening stage of plaster of Paris, the compound formed is Show Answer


Q332) Sodium reacts with water more vigorously than lithium because it: Show Answer


Q333) Magnesium has polarising power closer to that of: Show Answer


Q334) Calcium does not combine directly with: Show Answer


Q335) A fire of lithium, sodium and potassium can be extinguished by Show Answer


Q336) The alkali metals: Show Answer


Q337) Alkali metals are soft and have relatively low m.p. and low density. This is because: Show Answer


Q338) The starting material used in Solvay's process are Show Answer


Q339) The process associated with sodium carbonate manufacture is known as ….process. Show Answer


Q340) In Down's method for the extraction of sodium, the melting point of the electrolyte is lowered by adding Show Answer


Q341) Thomas slag is Show Answer


Q342) In the alkaline earth metals, the element forming predominantly covalent compound is Show Answer


Q343) The formula of Norwegian saltpetre is: Show Answer


Q344) Calcium is extracted by the electrolysis of: Show Answer


Q345) The right order of the solubility of sulphates of alkaline earth metals in water is Show Answer


Q346) Lithium is the only alkali metal which is not placed in kerosene but is wrapped in paraffin wax, because: Show Answer


Q347) Out of following which compound is used for preservation of wood? Show Answer


Q348) When sulphur is heated with NaOH (aq) the compounds formed are: Show Answer


Q349) In certain matters, lithium differs from other alkali metals, the main reason for this is: Show Answer


Q350) An ore of potassium is: Show Answer


Q351) Order of increasing density is Show Answer


Q352) The highly efficient method of obtaining beryllium is: Show Answer


Q353) In curing cement plasters water is sprinkled from time to time. This helps in Show Answer


Q354) Which decomposes on heating? Show Answer


Q355) The solubility of silver bromide in hypo solution due to the formation of Show Answer


Q356) Ionic hydrides: Show Answer


Q357) The chemical formula of plaster of Paris is Show Answer


Q358) Alloys of which metal are light and strong and are used in the manufacture of aeroplane parts? Show Answer


Q359) When magnesium is burnt in air, compounds of magnesium formed are magnesium oxide and: Show Answer


Q360) Which element of IA group is most abundantly found in combined state? Show Answer


Q361) Alkaline earth metal compounds are les soluble in water than corresponding alkali metal compounds because former have: Show Answer


Q362) The decreasing order of second ionization energy of K, Ca and Ba is: Show Answer


Q363) Fluorspar is: Show Answer


Q364) The most soluble compound in water is: Show Answer


Q365) Setting of plaster of Paris is Show Answer


Q366) Calcium is obtained by Show Answer


Q367) Which of the following metals has stable carbonates? Show Answer


Q368) The main reason for using a mercury electrolytic cell in NaOH manufacture is that: Show Answer


Q369) The ionic mobility of alkali metal ions in aqueous solution is maximum for Show Answer


Q370) Beryllium hydride is obtained by: Show Answer


Q371) The products of the electrolysis of concentrated aqueous solution of common salt are: Show Answer


Q372) In the Down’s cell KCl is added in NaCl to: Show Answer


Q373) Blanc fixe used in paints is: Show Answer


Q374) The weakest base among the following is: Show Answer


Q375) Calcium cyanide reacts with steam to form ammonia and: Show Answer


Q376) Which salt on heating does not give brown coloured gas is? Show Answer


Q377) The biggest ion is: Show Answer


Q378) The element which does not dissolve in caustic soda is: Show Answer


Q379) Which on heating with NaOH solution gives inflammable gas? Show Answer


Q380) The colour of iodine solution is discharged by shaking it with aqueous solution of: Show Answer


Q381) Hypo is chemically: Show Answer


Q382) Which alkaline earth metal is the most abundant in the earth's crust? Show Answer


Q383) The formula of the product formed, when sodium thiosulphate solution is added to silver bromide is Show Answer


Q384) Mg burns with a brilliant flame. This property is used in: Show Answer


Q385) Concrete is a mixture of: Show Answer


Q386) The reaction of water with sodium and potassium is: Show Answer


Q387) Which one is the highest melting point halide? Show Answer


Q388) Beryllium shows diagonal relationship with Show Answer


Q389) Bleaching action of bleaching powder is due to the liberation of Show Answer


Q390) Which one of the following order of stability is correct? Show Answer


Q391) Baryta water is: Show Answer


Q392) Barium burns in air to form Show Answer


Q393) The lightest metal among these is Show Answer


Q394) In India, at the occasion of marriages, the fireworks used give green flame. Which one of the following radicals may be present? Show Answer


Q395) A substance which gives a brick red flame and breaks down on heating giving oxygen and a brown gas is: Show Answer


Q396) Complex forming tendency is more for Show Answer


Q397) Alkali metals act as Show Answer


Q398) The mineral of magnesium is Show Answer


Q399) Mortar is a mixture of Show Answer


Q400) In between the metals A and B, both form oxide but B also forms nitride, when both burn in air. So A and B are: Show Answer


Q401) Which of the following alkaline earth metal sulphate has hydration enthalpy by higher than its lattice enthalpy? Show Answer


Q402) NaOH is not used in: Show Answer


Q403) Cement does not contain Show Answer


Q404) A solution of KOH in water is called: Show Answer


Q405) Which of the following hydrogen compounds is most ionic? Show Answer


Q406) Which sequence of reactions shows correct chemical relation between sodium and its compounds? Show Answer


Q407) The salt added to table salt to make it flow freely in rainy season is: Show Answer


Q408) Lithopone is Show Answer


Q409) Sodium bicarbonate solution on adding to magnesium sulphate solution forms: Show Answer


Q410) Which pair of elements would form the most ionic bond? Show Answer


Q411) Sodium carbonate is manufactured by Solvay process. The products those are recycled are: Show Answer


Q412) Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point? Show Answer


Q413) Sodium carbonate on heating gives: Show Answer


Q414) The correct order of hydration energy of alkaline earth metal ions is: Show Answer


Q415) Which one has highest lattice energy? Show Answer


Q416) The decomposition temperature is maximum for Show Answer


Q417) Which of the following exists in polymeric form? Show Answer


Q418) The element which on burning in air gives peroxide is Show Answer


Q419) Electric cookers have a coating of ….that protects them against fire. Show Answer


Q420) Limestone is not used in which of the following manufacturing processes? Show Answer


Q421) Microcosmic salt is Show Answer


Q422) Sodium burns in dry air to give: Show Answer


Q423) The byproduct of Solvay process is: Show Answer


Q424) Select the incorrect statement Show Answer


Q425) Acidified solution of sodium thiosulphate is unstable because in thiosulphate: Show Answer


Q426) Metals belonging to the same group in the periodic table are: Show Answer


Q427) Which of the following compounds is a peroxide: Show Answer


Q428) In the extraction of sodium by Down's process, cathode and anode are respectively Show Answer


Q429) Milk of lime is: Show Answer


Q430) Celestine is an ore of: Show Answer


Q431) Which of the following statements is false regarding saline hydrides? Show Answer


Q432) Among the alkali metals caesium is the most reactive because Show Answer


Q433) Phosphine, acetylene and ammonia can be formed by treating water with Show Answer


Q434) Soda ash is chemically: Show Answer


Q435) Magnesia is: Show Answer


Q436) Which one of the following processes is used for manufacture of calcium? Show Answer


Q437) Which of the following ions, will have maximum hydration energy? Show Answer


Q438) Which substance gives a different flame colouration from the others? Show Answer


Q439) An alloy of Na + K is: Show Answer


Q440) Chlorophyll contains: Show Answer


Q441) Carnallite is Show Answer


Q442) Oxygen can be obtained by heating: Show Answer


Q443) Sodium carbonate solution in water is alkaline due to: Show Answer


Q444) Which of the following pairs of substances would give same gaseous product in reaction with water? Show Answer


Q445) Which of the following reaction does not liberate gaseous product? Show Answer


Q446) Which of the following is not correct? Show Answer


Q447) Which of the following compounds has the lowest melting point? Show Answer


Q448) The outermost electron is most loosely held in: Show Answer


Q449) On heating quick lime with coke in an electric furnace we get: Show Answer


Q450) Which of the following is not an ore of magnesium? Show Answer


Q451) Which salt will not impart colour to flame? Show Answer


Q452) Gypsum is added to clinker during cement manufacture to: Show Answer


Q453) The chloride that can be extracted with ether: Show Answer


Q454) Which is most basic in character? Show Answer


Q455) Iceland spar is: Show Answer


Q456) Which of the following acts as reducing agent as well as oxidising agent? Show Answer


Q457) Which of the following is correct? Show Answer


Q458) Which will react with acid and alkalies both i.e., (amphoteric)? Show Answer


Q459) Which is quick lime? Show Answer


Q460) Pearl ash and caustic potash are chemically: Show Answer


Q461) When sodium is heated in flame it gives: Show Answer


Q462) Among the following, which has minimum solubility in water? Show Answer


Q463) Sodium chloride imparts a golden yellow colour to the Bunsen flame. This can be interpreted due to: Show Answer


Q464) Which property increases in magnitude as the atomic number of alkali metals increases? Show Answer


Q465) Bleaching powder is obtained by the interaction of chlorine and Show Answer


Q466) Ca, Sr and Ba dissolve in liquid ammonia giving a…… Show Answer


Q467) Potassium when heated strongly in oxygen, it forms: Show Answer


Q468) The ionic conductances of following cations in a given concentration are in the order Show Answer


Q469) Which can undergo both oxidation and reduction? Show Answer


Q470) Which component of cement sets at the slowest rate? Show Answer


Q471) Scarlet flame colour of Bunsen flame is characteristic of: Show Answer


Q472) Which pair of the following chlorides do not impart colour to the flame? Show Answer


Q473) Which one of the following electrolytes is used in Down's process of extracting sodium metal? Show Answer


Q474) In the presence of cobalt chloride, bleaching powder decomposes to form Show Answer


Q475) The highest oxidation potential stands for: Show Answer


Q476) Melting point is highest for: Show Answer


Q477) Sodium has…..as compared to potassium Show Answer


Q478) Which ion forms hydroxide easily soluble in water? Show Answer


Q479) One of the important use of quicklime is: Show Answer


Q480) Which out of the following statements is not correct for anhydrous calcium chloride? Show Answer


Q481) On heating washing soda, we get: Show Answer


Q482) Sodium peroxide in contact with moist air turns white due to the formation of: Show Answer


Q483) Which of the following is incorrect? Show Answer


Q484) When sodium chloride solution is electrolysed, the gas that is liberated at the cathode is Show Answer


Q485) Which alkaline earth metal nitride is volatile? Show Answer


Q486) Manufacture of NaOH is done by: Show Answer


Q487) Which one of the following statements is true for all the alkali metals? Show Answer


Q488) Strongest reducing agent among the following is: Show Answer


Q489) The compound which is not soluble in dil. HCl is: Show Answer


Q490) Which alkali metal is most metallic in character? Show Answer


Q491) Sodium is manufactured by the electrolysis of a fused mixture of sodium and calcium chlorides in a steel cell using a graphite anode and an iron cathode. Calcium is not liberated since: Show Answer


Q492) One mole of magnesium nitride on the reaction with excess water gives: Show Answer


Q493) Which of the following is known as dead burnt plaster? Show Answer


Q494) Which of the compounds of cement sets at the slowest rate? Show Answer


Q495) Which removes temporary hardness of water and is used in the manufacture of bleaching powder? Show Answer


Q496) The alkali metal that reacts with nitrogen directly to form nitride is Show Answer


Q497) Elements of group 1 and group VI in the periodic table have one thing common. That is with the increasing atomic number, the: Show Answer


Q498) The most reactive element among the following is: Show Answer


Q499) The non-metal which is not affected by NaOH: Show Answer


Q500) Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect? Show Answer


Q501) Which statement is correct for alkaline earth metals? Show Answer


Q502) Which alkali metal bicarbonates does not exist as solid? Show Answer


Q503) In a sodium chloride crystal, each chloride ion is surrounded by: Show Answer


Q504) Alkaline earth metals are denser than alkali metals, because metallic bonding in alkaline earth’s metal is Show Answer


Q505) The ion having maximum value of hydration energy is: Show Answer


Q506) Magnesium metal is prepared by: Show Answer


Q507) Which of the following hydroxides is amphoteric in nature? Show Answer


Q508) Black ash is: Show Answer


Q509) Sodium carbonate is: Show Answer


Q510) How many elements are included in IA group? Show Answer


Q511) Which category of salts of alkaline earth metals is not found in solid state, but found in solution state? Show Answer


Q512) Which is not true in respect of berryllium chemistry? Show Answer


Q513) The cation which forms a yellow precipitate with potassium chromate in acetic acid is: Show Answer


Q514) For which one of the following minerals, the composition given is incorrect? Show Answer


Q515) The stability of the following alkali metal chlorides follows the order: Show Answer


Q516) The solubility of alkali metal hydroxide is Show Answer


Q517) Which of the statements is not true? Show Answer


Q518) The alkali metal which acts as a nutrient for plants is: Show Answer


Q519) Glauber's salt is: Show Answer


Q520) Which chloride is covalent and soluble in ether? Show Answer


Q521) Which compound is used in photography? Show Answer


Q522) Which metal does not form ionic hydride? Show Answer


Q523) The dark red colour of bombs in fireworks is due to the presence of Show Answer


Q524) Which of the following metal carbonates is decomposed on heating? Show Answer


Q525) Which of the following is not soluble in NaOH? Show Answer


Q526) Some large white transparent crystals are left out in a bowl for several days. They are then observed to have changed their form into white powder. The crystals may have been of Show Answer


Q527) Excess of dilute sodium hydroxide solution is gradually added with shaking to an aqueous solution of zinc sulphate. What would you observe? Show Answer


Q528) The raw materials in Solvay process are: Show Answer


Q529) One mole of magnesium nitride on the reaction with an excess of water gives Show Answer


Q530) Slaked lime is: Show Answer


Q531) Sodium thiosulphate is prepared by Show Answer


Q532) Setting of plaster of Paris involves Show Answer


Q533) The only element which is radioactive among alkali metals is: Show Answer


Q534) The pair of compounds which cannot exist together in solution is: Show Answer


Q535) Potassium is kept in Show Answer


Q536) Common table salt becomes moist and does not pour easily in rainy season because: Show Answer


Q537) The calcium salt used as manure is: Show Answer


Q538) Lithium iodide is: Show Answer


Q539) Which of the following represents the composition of carnallite mineral? Show Answer


Q540) Sodium metal cannot be stored under: Show Answer


Q541) The element that forms a solid basic oxide at room temperature is: Show Answer


Q542) Which ion has closed shell electronic configuration? Show Answer


Q543) Which alkali metal is frequently used in solar cells? Show Answer


Q544) Which gives apple green colour in fireworks? Show Answer


Q545) Which of the following process is used in the extractive metallurgy of magnesium? Show Answer


Q546) The substance used in Holme’s signal of the ship is a mixture of Show Answer


Q547) Causticisation process is used for the preparation of: Show Answer


Q548) Which of the following alkali metal ion in aqueous solution is the best conductor of electricity? Show Answer


Q549) Indian saltpetre is: Show Answer


Q550) Brine is chemically: Show Answer


Q551) The atomic numbers of four elements are given below. Which is an alkaline earth metal? Show Answer


Q552) The plaster of Paris is: Show Answer


Q553) The ashes of plants contain alkali metals, 90% of which is: Show Answer


Q554) Superphosphate of lime is a mixture of: Show Answer


Q555) A solid is a compound of group 1 element and it gives a bright red colour in the flame test. The solid is Show Answer


Q556) When sodium metal is dissolved in liquid ammonia, a blue solution is formed. The blue colour is due to: Show Answer


Q557) The chemical which is used for plastering the broken bones is Show Answer


Q558) Which one is not a correct formula? Show Answer


Q559) Plaster of Paris on making paste with little water sets to hard mass due to formation of Show Answer


Q560) Which one of the following is the highest melting halide? Show Answer


Q561) The chemical formula of feldspar is Show Answer


Q562) Which of the following properties of lithium does not show diagonal relationship with magnesium? Show Answer


Q563) Lithium is strongest reducing agent among alkali metals due to which of the following factor? Show Answer


Q564) Li, Na among alkali metals show properties of: Show Answer


Q565) Caesium oxide will be: Show Answer


Q566) When ammoniacal solution of common salt is saturated with carbon dioxide, we get: Show Answer


Q567) Microcosmic salt has the formula: Show Answer


Q568) The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders? Show Answer


Q569) Which of the following has minimum values of cation-anion size ratio? Show Answer


Q570) Which alkaline earth metal forms complex salts? Show Answer


Q571) Which electronic configuration represents the configuration of the most electropositive element? Show Answer


Q572) Le-blanc process is employed in the manufacture of Show Answer


Q573) When a crystal of caustic soda is exposed to air, a liquid layer is deposited because: Show Answer


Q574) The most soluble halide in water is Show Answer


Q575) Which does not form double salt? Show Answer


Q576) Which of the following on thermal decomposition yields a basic as well as an acidic oxide? Show Answer


Q577) Sorel’s cement is Show Answer


Q578) When KI is added to acidified solution of sodium nitrite then Show Answer


Q579) The metallic lustre exhibited by sodium is due to: Show Answer


Q580) Baryta is: Show Answer


Q581) Which pair cannot exist together in solution? Show Answer


Q582) NaOH is prepared by the electrolysis of: Show Answer


Q583) Oxygen is obtained from bleaching powder by: Show Answer


Q584) Washing soda is: Show Answer


Q585) Element found in plant systems which forms an important constituent of photosynthesis is: Show Answer


Q586) Chlorine reacts with 'X' to form bleaching powder. 'X' is Show Answer


Q587) Hesenclever's process is a method for the manufacture of: Show Answer


Q588) The most dangerous method of preparing hydrogen would be by the action of HCl on: Show Answer


Q589) Which ion forms a hydroxide highly soluble in water? Show Answer


Q590) Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in Show Answer


Q591) The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is: Show Answer


Q592) The molecular formula of potash alum is Show Answer


Q593) Dolomite is a carbonate ore of: Show Answer


Q594) Which is known as crystal carbonate? Show Answer


Q595) Which is used in preparation of portland cement? Show Answer


Q596) The most electropositive element in alkali metals, is Show Answer


Q597) Caustic soda is: Show Answer


Q598) Photoelectric effect is maximum in Show Answer


Q599) The solubilities of carbonates of magnesium group decreases down due to decrease in: Show Answer


Q600) Highly pure dilute solution of sodium in liquid ammonia: Show Answer


Q601) Tincal is: Show Answer


Q602) Which one of the following is true? Show Answer


Q603) The yellow light for illumination of lamps is from: Show Answer


Q604) Calcium cyanamide reacts with steam to form ammonia and……. Show Answer


Q605) Thermal decomposition of which compound yields a basic and acidic oxide simultaneously? Show Answer


Q606) Which one of the following will dissolve in water most readily? Show Answer


Q607) Which group of elements lose electrons more readily? Show Answer


Q608) The nitride ion in lithium nitride is composed of: Show Answer


Q609) firework gave bright crimson light. It is probably a salt of: Show Answer


Q610) One of the elements present in carnallite shows flame colouration. The colour of the flame is Show Answer


Q611) Which of the following dissolves in hot conc. NaOH solution? Show Answer


Q612) The electrolyte employed in the extraction of sodium by Down's electrolysis method is: Show Answer


Q613) Which of the following represents calcium chlorite? Show Answer


Q614) Which compound gives acetylene on reaction with water? Show Answer


Q615) Which represents nitrolime? Show Answer


Q616) What are the metal ions present in carnallite? Show Answer


Q617) Sodium reacts with water less vigorously than potassium because: Show Answer


Q618) In which of the following reactions, MgO is not formed? Show Answer


Q619) It is used as reducing agent in organic reactions. Show Answer


Q620) Which of the following metal carbonates decomposes on heating? Show Answer


Q621) Magnesium has polarizing power closer to that of: Show Answer


Q622) The ionic carbide is: Show Answer


Q623) The correct order of solubility of the sulphates of alkaline earth metals in water is Show Answer


Q624) Compared with the alkaline earth metals, the alkali metals exhibit Show Answer


Q625) The activity of alkaline earth metals as reducing agents Show Answer


Q626) The main constituent of egg-shells is Show Answer


Q627) Which of the following is weakest base? Show Answer


Q628) Which alkali metal emits largest wavelength in the flame test? Show Answer


Q629) The solubilities of carbonates decrease down the magnesium group due to decrease in Show Answer


Q630) The bleaching action of bleaching powder is due to the formation of Show Answer


Q631) Which of the following sulphates has the highest solubility? Show Answer


Q632) A chloride dissolves appreciably in cold water. When placed on a platinum wire in Bunsen flame, no distinctive colour is noticed. Which one is cation? Show Answer


Q633) Barium is extracted from its ore: Show Answer


Q634) Oxone is name given to: Show Answer


Q635) Which alkaline earth metal shows some anomalous behaviour and has the same electro negativity as aluminium? Show Answer


Q636) The chemistry of lithium is very much similar to that of magnesium even though they are placed in different groups. The reason is: Show Answer


Q637) Solvay process is used for the manufacture of Show Answer


Q638) Which hydride is most stable? Show Answer


Q639) Zinc carbonate can be obtained from a solution of zinc chloride by adding: Show Answer


Q640) Ra is placed at the bottom of alkaline earth metals. The element should: Show Answer


Q641) Who discovered radium? Show Answer


Q642) Which gives least basic oxide? Show Answer


Q643) The decomposition temperature is maximum for Show Answer


Q644) Gun powder is: Show Answer


Q645) Calcium phosphide is: Show Answer


Q646) Which alkali metal reacts with nitrogen to form nitride? Show Answer