Practice Test

Q1) Instrumentation of aircraft was developed by Show Answer

Q2) Which of the following is not an alkali metal? Show Answer

Q3) Rubidium is placed in the _______ period of the periodic table. Show Answer

Q4) Which of the following does not belong to alkaline earth metals family? Show Answer

Q5) The common oxidation state for alkaline earth metals is Show Answer

Q6) Which of the following s-block element ranks fifth abundance in the earth crust? Show Answer

Q7) Which of the following s-block element ranks sixth abundance in the earth crust? Show Answer

Q8) The main ore of Barium is Show Answer

Q9) Amongst alkali metal cations, _______ has the smallest size. Show Answer

Q10) Amongst the following alkali metals, which is the strongest reducing agent? Show Answer

Q11) Which of the following alkali hydrides is the most stable? Show Answer

Q12) Covalent character of lithium compounds is higher, which is responsible for their______ in organic solvents Show Answer

Q13) Atomic radius of Li is Show Answer

Q14) Atomic radius of Cs is Show Answer

Q15) Alkali metals do not exist in free state in nature because they are Show Answer

Q16) Which of the following is the most electropositive element? Show Answer

Q17) The hydrides of alkali metals have high Show Answer

Q18) Sodium reacts with oxygen to form Show Answer

Q19) Alkali metals react with water to form corresponding hydroxides with the evolution of Show Answer

Q20) Which of the following hydrides is most stable? Show Answer

Q21) Oxides of alkali metals combines with water to form Show Answer

Q22) Sodium burns in air to give Show Answer

Q23) The reaction of water with sodium is Show Answer

Q24) Which of the following cannot form peroxide? Show Answer

Q25) Solvay process is also known as Show Answer

Q26) ______ is useful in purification of bauxite Show Answer

Q27) In the preparation of sodium hydroxide by electrolysis of sodium chloride in castner-Kellner cell, ______ gas is evolved at the anode Show Answer

Q28) ______ is also known as baking soda Show Answer

Q29) In Castner's process for extraction of sodium _____ acts as cathode Show Answer

Q30) Most abundant salt of sodium is its Show Answer

Q31) The most abundant alkali metal is Show Answer

Q32) ______ alloy is used for aircraft construction Show Answer

Q33) _______ is used as coolant in fast breeder nuclear reactors Show Answer

Q34) ______ is used as a source of oxygen in submarine, space shuttles and in emergency breathing apparatus. Show Answer

Q35) ______ is used in medicines as a sedative Show Answer

Q36) ______ plays an important role in Wurtz synthesis Show Answer

Q37) A typical 70 kg man contains about _______ of K. Show Answer

Q38) _____ is a major cation in cytoplasm (inside the cells) Show Answer

Q39) Excess of sodium result in Show Answer

Q40) Beryllium shows diagonal relationship with Show Answer

Q41) Atomic size of alkaline earth metal are______ than alkali metals Show Answer

Q42) ______ ionisation enthalpies of alkaline earth metals are smaller than those of the alkaline metals Show Answer

Q43) The first ionisation enthalpies of alkaline earth metals are higher than alkali metals due to their Show Answer

Q44) Identify the element whose compounds are partly ionic and partly ionic and partly covalent Show Answer

Q45) With pure oxygen Ba, Sr and Ra form Show Answer

Q46) Oxides and hydroxides of beryllium are ______ in nature Show Answer

Q47) Alkaline earth metals (except Beryllium) can have a coordination number of Show Answer

Q48) Which metal of group- 2 has highest m.p. and b. p.? Show Answer

Q49) Suspension of slaked lime in water is called Show Answer

Q50) Quick lime is Show Answer

Q51) Slaking of lime reaction is Show Answer

Q52) Deficiency of calcium causes Show Answer

Q53) A typical 70 kg man contains about _______ of Na Show Answer

Q54) Li combines with nitrogen to form Show Answer

Q55) Ionization enthalpy of lithium is Show Answer

Q56) Outermost shell of an alkali metal has electronic configuration Show Answer

Q57) The complex hydride of sodium is Show Answer

Q58) Sodium is usually kept under Show Answer

Q59) Baking soda is Show Answer

Q60) _____ is an important reagent used in qualitative & quantitative analysis Show Answer

Q61) The compound which is not present as impurity in NaCl is Show Answer

Q62) ______ is used to lower down temperature of ice. Show Answer

Q63) Sodium and potassium ions are used to maintain constant __________ on either side of the cell wall Show Answer

Q64) The correct order of reactivity of alkaline earth metals with water is Show Answer

Q65) Which of the folllowing hydrides in covalent? Show Answer

Q66) Which of the following compound is used to scan the X-ray of the human digestive system? Show Answer

Q67) Beryllium hydroxide dissolves in excess of alkali to give. Show Answer

Q68) Slaked lime reacts with chlorine to give Show Answer

Q69) Quick lime is Show Answer

Q70) ______ has wide application in purification of sugar Show Answer

Q71) _____ is used as mild abrasive in tooth paste. Show Answer

Q72) Alkali metals form amides of the general formula Show Answer

Q73) Density of potassium is Show Answer

Q74) Hydrogen was dissolved by Show Answer

Q75) Hydrogen resembles halogens in many respects, for which several factors are responsible. The most important factor is Show Answer

Q76) Hydrogen is placed Show Answer

Q77) The isotope of Hydrogen which is radioactive is Show Answer

Q78) Deuterium oxide is used as a moderator in nuclear reactors because Show Answer

Q79) Number of neutrons in the nucleus of tritium is Show Answer

Q80) The least abundant isotope of hydrogen is Show Answer

Q81) Tritium a radioactive isotope of hydrogen. it emits Show Answer

Q82) The sum of the number of neutrons and proton in the isotope of hydrogen is Show Answer

Q83) Commercial hydrogen is obtained from Show Answer

Q84) When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volumes of hydrogen evolved is Show Answer

Q85) Some covalent organic compounds dissolve in water due to Show Answer

Q86) Hydrogen is Show Answer

Q87) Which of the following statements is most appropriate about hydrogen ? It can act Show Answer

Q88) In which of the following compounds does hydrogen have an oxidation state of -1 ? Show Answer

Q89) Which of the following compound is converted from a liquid state to solid state by hydrogen ? Show Answer

Q90) Hydrogen gas will not reduce Show Answer

Q91) Hydrogen acts as an oxidising agent in its reaction with Show Answer

Q92) Water gas is mixture of Show Answer

Q93) Which of the following is used as rocket fuel ? Show Answer

Q94) When hydrogen peroxide is oxidised by a suitable oxidant one of the product is Show Answer

Q95) When sodium peroxide is treated with dilute sulphuric acid, we get Show Answer

Q96) Hydrogen peroxide is obtained by the electrolysis of Show Answer

Q97) Decomposition of hydrogen peroxide is prevented by Show Answer

Q98) Hydrogen peroxide is used as an antiseptic under the name Show Answer

Q99) Hydrogen is used in Show Answer

Q100) Which of the following uses hydrogen to generate electricity ? Show Answer

Q101) The reaction occuring in fuel cell is Show Answer

Q102) Which of the following statement is NOT true about 's' block elements ? Show Answer

Q103) What is the nature of plant ash ? Show Answer

Q104) The element with atomic number 19 is similar in physical and chemical properties to the element with atomic number Show Answer

Q105) Which of the following are isoelectronic with one another ? Show Answer

Q106) Electronic configuration of calcium atom may be written as Show Answer

Q107) The number of electrons in the outermost orbital of alkaline earth metals are Show Answer

Q108) The least abundant alkaline earth metal is Show Answer

Q109) Among the alkaline earth elements, element ranking 5th in abundance in the earth crust is Show Answer

Q110) Among the alkaline earth elements, element ranking 6th in abundance in the earth crust is Show Answer

Q111) The most widely distributed alkali metals as chloride i nature is / are Show Answer

Q112) Which of the following statements is NOT true about lithium and magnesium ? Show Answer

Q113) Diagonal relationship is shown by the elements Show Answer

Q114) Why the alkali metals have low ionisation enthalpies ? Show Answer

Q115) Which of the following is powerful reducing agent that used widely in organic chemistry ? Show Answer

Q116) Which of the following properties is not true for an alkali metal ? Show Answer

Q117) Which of the following has lowest melting point ? Show Answer

Q118) The set representing the correct order of ionic radius is Show Answer

Q119) The alkali metal which can emit its outermost electron under the influence of even candle light is Show Answer

Q120) Which of the following when introduced into the Bunsen's flame gives pink violet colour ? Show Answer

Q121) The reaction of water with Na and K is Show Answer

Q122) Alkali metals present in their compounds are always Show Answer

Q123) On heating sodium metal in a current of dry ammonia, the compound formed is Show Answer

Q124) Solution of sodium metal in liquid ammonia is strongly reducing due to the presence in solution of the following Show Answer

Q125) Chemical formula of washing soda is Show Answer

Q126) Sodium carbonate on hydrolysis gives Show Answer

Q127) Washing soda has the formula Show Answer

Q128) NaOH is Show Answer

Q129) Which of the following statements is incorrect ? Show Answer

Q130) Which of the following metal is used in devising photo electric cells ? Show Answer

Q131) Causticisation process is used for the preparation of Show Answer

Q132) Which of the following is known as fusion mixture ? Show Answer

Q133) The elements of group 2 are called alkaline earth metals because Show Answer

Q134) Which of the following represents the electronic configuration of the most electropositive alkaline earth metal ? Show Answer

Q135) The most electronegative alkaline earth element is Show Answer

Q136) What are product/s formed, when powdered beryllium burns on ignition in air ? Show Answer

Q137) Barium burns in air to form Show Answer

Q138) What is hydrolith ? Show Answer

Q139) The number of covalent bonds formed by beryllium is Show Answer

Q140) A metal M is present in the soil, plants, bones, egg shells and sea shells. It is also used to remove oxygen from molten steel. The metal M is Show Answer

Q141) BeO is least soluble in Show Answer

Q142) Beryllium and aluminium have similar properties because Show Answer

Q143) Which of the following is not common property of Be and Al ? Show Answer

Q144) Suspension of slaked lime in water is called Show Answer

Q145) Calcium oxide is called Show Answer

Q146) Water gas is prepared by Show Answer

Q147) Dihydrogen is not preferred in balloons these days as Show Answer

Q148) Which of the following metals gives dihydrogen on treatment with acid as well as sodium hydroxide ? Show Answer

Q149) The salt which imparts permanent hardness to water is Show Answer

Q150) When heavy water is added to calcium carbide the compound formed is Show Answer

Q151) Ortho and para hydrogen differ in the Show Answer

Q152) Which of the following alkaline earth metal do not contain 'd' orbital ? Show Answer

Q153) A binary compound formed between the elements with atomic numbers 19 and 17 is expected to be Show Answer

Q154) Sodium reacts with water more vigorously than lithium because it Show Answer

Q155) Amongst sodium halides (NaF, NaCl, NaBr and NaI), NaF has the highest melting point because of Show Answer

Q156) The order of solubility of lithium halides in non-polar solvents follows the order : Show Answer

Q157) Melting points of the chlorides of alkali metals decreases in the order : Show Answer

Q158) One of the following statements is incorrect. Show Answer

Q159) Alkaline earth metal compounds are less soluble in water than the corresponding alkali metal compounds because the former have Show Answer

Q160) An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is Show Answer

Q161) Identify the correct statement. Show Answer

Q162) Which of the following has the highest melting point ? Show Answer

Q163) Consider
(1) Sodium dissolves in ammonia to give a blue coloured solution
(2) Sodium does not form amalgam with mercury
(3) Sodium can be cut with a knife
(4) Density of Na is more than that of Li
Of the given statements, the correct are Show Answer

Q164) Which one of the following is the most abundant alkali metal (in combined state) in nature ? Show Answer

Q165) On heating sodium metal in a current of dry ammonia gas the compound formed is Show Answer

Q166) The quantum numbers for the highest energy electron of an atom are n = 2, I = 0, m = 0, s = 1/2. The atom is Show Answer

Q167) Which one of the following is/are acid salt / s ? Show Answer

Q168) The following are some of the methods commonly employed for the extraction of metals from their ores. Which of the following methods is generally employed for the extraction of sodium ? Show Answer

Q169) Which one of the following ore does not contain magnesium ? Show Answer

Q170) Electric cookers have a coating that protects them against fire. The coating is made of Show Answer

Q171) Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled though A, it turns cloudly. What is the chemical formula of A ? Show Answer

Q172) The colours emitted by excited atoms are characteristics of the element. The element famous for the red emission of fireworks and warning flares is Show Answer

Q173) For bleaching powder which is incorrect ? Show Answer

Q174) The decreasing order of second ionisation energy of K, Ca and Ba is Show Answer

Q175) Two metals X and Y belong to the second group of periodic table. X forms insoluble oxide but soluble sulphate. Y forms a soluble oxide but insoluble sulphate. Hydroxide of metal X is soluble in NaOH while that of metal Y is insoluble in NaOH. What are metals X and Y ? Show Answer