Practice Test

Q1) Transition metals exhibit each of the following properties except Show Answer

Q2) The principal oxidation state of lanthanides is Show Answer

Q3) The f - block elements are also called Show Answer

Q4) The lanthanide contraction refers to Show Answer

Q5) Which of the following elements does not belong to first transition series? Show Answer

Q6) The element which exhibits variable valency is Show Answer

Q7) Which of the following is not correct? Show Answer

Q8) Which of the following groups of elements forms mostly coloured compounds? Show Answer

Q9) Which of the following does not belong to first transition series? Show Answer

Q10) Copper has each of the following properties except : Show Answer

Q11) Which of the following has lowest density? Show Answer

Q12) The separation of lanthanides in ion exchange method is based on: Show Answer

Q13) Which of the following statements is not correct regarding lanthanides and actinides? Show Answer

Q14) The copper group (IB) consists of the following elements except Show Answer

Q15) In which state, the compounds of vanadium are diamagnetic? Show Answer

Q16) Which of the following elements forms two or more chlorides? Show Answer

Q17) The iron triad of elements are Show Answer

Q18) The mass of gold in an 18 carat gold ring of 4 g is Show Answer

Q19) Which metal has the highest melting point? Show Answer

Q20) Which of the following belongs to actinide series of elements? Show Answer

Q21) Which of the following statements concerning transition metal is false? Show Answer

Q22) Zn and Hf have almost equal atomic and ionic radii because of Show Answer

Q23) Permanent magnets are generally made of alloys of Show Answer

Q24) The maximum oxidation state shown by osmium is Show Answer

Q25) The mineral from which potassium permanganate is manufactured is Show Answer

Q26) Which one of the following metals has the lowest melting point? Show Answer

Q27) The colour of lanthanides and actinides is due to Show Answer

Q28) Which of the following does not belong to same group? Show Answer

Q29) Which of the following is paramagnetic? Show Answer

Q30) Which of the following forms interstitial compounds? Show Answer

Q31) Which of the following has maximum ferromagnetic character? Show Answer

Q32) The element which is present in every amalgam is Show Answer

Q33) The colour of transition metal compounds is attributed to Show Answer

Q34) When potassium dichromate crystals are heated with concentrated sulphuric acid, we get Show Answer

Q35) Which of the following elements has highest melting point? Show Answer

Q36) Highest (+7) oxidation state is shown by Show Answer

Q37) The most stable oxidation state of iron is Show Answer

Q38) Acidified potassium dichromate is treated with hydrogen sulphide. In this reaction, the oxidation number of chromium Show Answer

Q39) Common oxidation state of scandium, a transition element is / are (At. No. = 21) Show Answer

Q40) Useful lanthanides member is Show Answer

Q41) Addition of high proportions of manganese makes steel useful in making rails of railroads because manganese Show Answer

Q42) The colour of Cu (I) salts is Show Answer

Q43) The calculated spin magnetic moment of Fe (II) is Show Answer

Q44) Which of the following is known as ' Wonder metal ' ? Show Answer

Q45) Which of the following form interstitial compounds of transition metals? Show Answer

Q46) Which of the following is correct sequence of first transition series? Show Answer

Q47) Brass is an alloy of Show Answer

Q48) The purest form of iron is Show Answer

Q49) Which of the following is not an ore of copper? Show Answer

Q50) Which element is alloyed with copper to form bronze? Show Answer

Q51) Percentage of gold in 21.6 carat of gold is Show Answer

Q52) If a steel article is heated to red hot and then it is allowed to cool slowly, the process is called Show Answer

Q53) Two of the constituents of German silver are Show Answer

Q54) The compound which gives off oxygen on moderate heating is Show Answer

Q55) An alloy which does not contain copper is Show Answer

Q56) Copper is used in each of the following except Show Answer

Q57) Which of the following is most soluble in water? Show Answer

Q58) The most important alloying element in the manufacture of steel is Show Answer

Q59) Which of the following does not form oxide with air? Show Answer

Q60) Which of the following sulphides is not black? Show Answer

Q61) Which of the following is not an important use of tin? Show Answer

Q62) Which of the following is used as a catalyst in Deacons process for the manufacture of chlorine? Show Answer

Q63) Constantan is an alloy of copper and Show Answer

Q64) The salts of which element are commonly used in photography? Show Answer

Q65) Lead is most readily dissolved in Show Answer

Q66) Extraction of silver from commercial lead is possible by : Show Answer

Q67) Which of the following is not an alloy of tin? Show Answer

Q68) When silver nitrate is heated, it gives Show Answer

Q69) A ring weighing 4 g contains 3 g of gold. It can be marked as Show Answer

Q70) Which of the following gives oxygen on moderate heating? Show Answer

Q71) Gold dissolves in Show Answer

Q72) Copper has the following properties except Show Answer

Q73) Coke is used in metallurgical process mainly as Show Answer

Q74) Which element is alloyed with copper to form brass? Show Answer

Q75) Iron is protected by coating it with a thin layer of Show Answer

Q76) Blister copper is Show Answer

Q77) Percentage of silver is german silver is about Show Answer

Q78) Silver nitrate is kept in brown bottles in the laboratory because Show Answer

Q79) Lead pipes are not safe for drinking water because Show Answer

Q80) Which of the following is not an alloy of tin? Show Answer

Q81) Silver nitrate produces a black stain on skin due to Show Answer

Q82) Which of the following metals is not dissolved in mercury? Show Answer

Q83) Passivity of iron is due to the formation of thin film of Show Answer

Q84) The process used for the extraction of gold is Show Answer

Q85) Which of the following sulphides is soluble in dil HCl? Show Answer

Q86) Which of the following alloys contains Cu and Zn? Show Answer

Q87) German silver does not contain Show Answer

Q88) Which of the following melts in boiling water? Show Answer

Q89) The metal present in insulin is Show Answer

Q90) Tinning of utensils is done to Show Answer

Q91) Which halide of silver is least soluble in ammonia? Show Answer

Q92) Which of the following element is present in haemoglobin? Show Answer

Q93) Rose metal contains Show Answer

Q94) The main constituent (highest percentage) of monel metal is Show Answer

Q95) Siderite is Show Answer

Q96) Photographic films and plates have an essential constituent of Show Answer

Q97) Which metal is present in brass, bronze and German silver? Show Answer

Q98) Gun metal is an alloy of Show Answer

Q99) Percentage of silver in the alloy German silver is Show Answer

Q100) The trace metal present in insulin is Show Answer

Q101) Galvanization is the Show Answer

Q102) Which of the following sulphide is black in colour? Show Answer

Q103) Which is common metal in gun metal, pewter and bell metal? Show Answer

Q104) The chemical process in the production of steel from haematite ore involves Show Answer

Q105) Anhydrous ferric chloride is prepared by Show Answer

Q106) Which one of the following nitrates will leave behind a metal on strong heating? Show Answer

Q107) A reduction in atomic size with increase in atomic number is a characteristic of elements of Show Answer

Q108) Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statement about cerium is incorrect? Show Answer

Q109) Which one contains both iron and copper? Show Answer

Q110) During the process of electrolytic refining of copper some metals present as impurity settle as "anode mud". These are: Show Answer

Q111) The oxidation state of final product formed by the reaction between KI and acidified potassium dichromate solution is Show Answer

Q112) Lanthanoid contraction is caused due to Show Answer

Q113) Transition metals usually exhibit highest oxidation states in their Show Answer

Q114) Which metal sulphide is not black? Show Answer

Q115) Which of the following is the major impurity in pig iron? Show Answer

Q116) Zinc and mercury do not show variable valency like d - block elements because Show Answer

Q117) Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are Show Answer

Q118) Silica is added to roasted copper ore during smelting in order to remove Show Answer

Q119) The alloy best suited for making meter scales is Show Answer

Q120) Across the lanthanide series, the basicity of the lanthanide hydroxides Show Answer

Q121) In potassium manganate, the oxidation state of manganese is Show Answer

Q122) Which of the following iron salts exists as dimer?
Show Answer

Q123) Which ion gives coloured solution? Show Answer

Q124) Iron (III) Show Answer

Q125) Which of the following compounds is paramagnetic? Show Answer

Q126) Which of the following is colourless? Show Answer

Q127) Scandium resembles with aluminium in the following properties except Show Answer

Q128) Vanadyl ion is Show Answer

Q129) The yellow coloured solution of chromate salt changes to orange colour on acidification due to the formation of Show Answer

Q130) Which of the following has lowest magnetic moment? Show Answer

Q131) Manganese shows oxidation states from +2 to +7. The most strongly oxidising state known in aqueous solution is Show Answer

Q132) When thiocyanate ions are added to the ferric solution, a deep red colour is obtained. It is due to the presence of: Show Answer

Q133) Which of the following complex ions does not correspond to Fe (II)? Show Answer

Q134) Which of the following is an acidic oxide? Show Answer

Q135) Magnetite is Show Answer

Q136) The brown ring test for nitrites and nitrates is due to the formation of complex of iron with the formula: Show Answer

Q137) Which of the following ions is paramagnetic? Show Answer

Q138) Which oxide of vanadium is most likely to be basic and ionic? Show Answer

Q139) Chromium becomes passive by the action of each of the following except: Show Answer

Q140) Which of the following forms a stable +4 oxidation state? Show Answer

Q141) Chromite is: Show Answer

Q142) Which of the following is paramagnetic? Show Answer

Q143) Potassium permanganate on heating gives: Show Answer

Q144) Which of the following has smallest ionic radius? Show Answer

Q145) Iron is rendered passive by treatment with concentrated: Show Answer

Q146) The aqueous solution of following salts will be coloured in case of :
Show Answer

Q147) Which of the following oxides of chromium is amphoteric in nature? Show Answer

Q148) Manganese exhibits maximum oxidation state in Show Answer

Q149) Which of the following metal oxides is white in colour but becomes yellow on heating? Show Answer

Q150) The maximum magnetic moment is shown by the ion with the outer electronic configuration of Show Answer

Q151) Which of the following has lowest magnetic moment? Show Answer

Q152) In strong alkaline medium, potassium permanganate changes to : Show Answer

Q153) The electrolysis of potassium manganate gives: Show Answer

Q154) Amongst the following the lowest degree of paramagnetism per mole of the compound at 298 K will be shown by Show Answer

Q155) Which of the following does not belong to 3d series? Show Answer

Q156) Iron has the lowest oxidation state in Show Answer

Q157) Which of the following has magnetic moment of 1.73 BM (approx)? Show Answer

Q158) In the case of transition metal ions, the magnetic moment for n unpaired electrons is given by Show Answer

Q159) The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably: Show Answer

Q160) In acidic medium if potassium permanganate is used as an oxidising agent, we get: Show Answer

Q161) Among the following outermost configurations of transition metals, which shows the highest oxidation state? Show Answer

Q162) Which of the following has least magnetic moment? Show Answer

Q163) Which of the following compounds is expected to be coloured? Show Answer

Q164) Among the following the compound that is both paramagnetic and coloured is Show Answer

Q165) The last electron in d - block elements goes to Show Answer

Q166) Rusting of iron is catalysed by Show Answer

Q167) Which of the following statement (s) is (are) correct with reference to ferrous and ferric ions Show Answer

Q168) The composition of the deliquescent crystals of zinc chloride is Show Answer

Q169) Which of the following has tendency to act as an oxidising agent? Show Answer

Q170) Permanganic acid is Show Answer

Q171) Which of the following statement is incorrect? Show Answer

Q172) In case of actinides, the degree of complex formation decreases as: Show Answer

Q173) Which of the following pairs has almost same colour? Show Answer

Q174) Which of the following is good oxidising agent? Show Answer

Q175) In which of the following pairs, the first ion has larger magnetic moment than the other? Show Answer

Q176) Which of the following statements is false? Show Answer

Q177) Which of the following contain two unpaired electrons? Show Answer

Q178) Blue vitriol is Show Answer

Q179) Horn silver has the chemical formula Show Answer

Q180) Zincite is Show Answer

Q181) Calomel is: Show Answer

Q182) Passivity of iron is due to the formation of a thin layer of: Show Answer

Q183) Nessler's reagent is : Show Answer

Q184) Lead acetate paper turns black on exposure to Show Answer

Q185) Magnetite is Show Answer

Q186) The aqueous solution of the following salts will be coloured in case of Show Answer

Q187) The formula of Lunar caustic is Show Answer

Q188) The black oxide of copper (CuO) in attacked by moisture and carbon dioxide in air and forms a green film of Show Answer

Q189) Which of the following is dark brown solid? Show Answer

Q190) Litharge is Show Answer

Q191) Chrome red is Show Answer

Q192) Nessler's reagent is an alkaline solution of Show Answer

Q193) Which of the following is not white? Show Answer

Q194) Which of the following is known as philosopher's wool? Show Answer

Q195) Lead (IV) oxide dissolves in sodium hydroxide to give: Show Answer

Q196) Bordeaux mixture is lime and solution of Show Answer

Q197) Lithopone is a mixture of Show Answer

Q198) Mohr's salt is Show Answer

Q199) On adding excess of sodium hydroxide to zinc gives: Show Answer

Q200) Sugar of lead has the chemical formula of Show Answer

Q201) Which of the following represents white lead? Show Answer

Q202) Treatment of ammoniacal silver nitrate with glucose gives Show Answer

Q203) Silver nitrate Show Answer

Q204) Basic copper carbonate on heating gives. Show Answer

Q205) Iron is rendered passive by treatment with concentrated: Show Answer

Q206) Thomas slag is Show Answer

Q207) Mercurous chloride reacts with stannous chloride to give black precipitate of Show Answer

Q208) Which of the following is used in cosmetics under the name vermillon? Show Answer

Q209) Which of the following is known as ruby copper? Show Answer

Q210) Which of the following is used as purgative in medicines? Show Answer

Q211) Which is the malachite ore of copper? Show Answer

Q212) Which of the following is fool's gold? Show Answer

Q213) Softening of lead means: Show Answer

Q214) Ferric sulphate on heating gives: Show Answer

Q215) Tin dissolves in hot alkali solution due to the formation of: Show Answer

Q216) Which of the following lead compounds is most stable? Show Answer

Q217) Gold dissolves in: Show Answer

Q218) The composition of golden spangles is : Show Answer

Q219) Which of the following ions exists as dimer? Show Answer

Q220) Which of the following nitrates on strong heating leaves the metal as the residue? Show Answer

Q221) Which of the following undergoes sublimation? Show Answer

Q222) An extremely hot copper wire reacts with steam to give: Show Answer

Q223) Substance soluble in ammonia is Show Answer

Q224) Which of the following is known as worm silver? Show Answer

Q225) Which of the following is known as ruby copper? Show Answer

Q226) The composition of golden spangles is Show Answer

Q227) The composition of golden spangles is Show Answer

Q228) The formula of corrosive sublimate is Show Answer

Q229) Optical glass has a high percentage of Show Answer

Q230) Passivity of iron is due to the formation of : Show Answer

Q231) The formula of haematite is: Show Answer

Q232) In Nessler's reagent, the ion is: Show Answer

Q233) Horn silver dissolves in excess of sodium cyanide forming? Show Answer

Q234) Lithopone is: Show Answer

Q235) Copper sulphate solution reacts with KCN to give: Show Answer

Q236) Iron is rendered passive when treated with: Show Answer

Q237) An important ore of copper is Show Answer

Q238) Titanium shows magnetic moment of 1.73 B.M. in its compound. What is the oxidation number of Ti in the compound? Show Answer

Q239) Copper is extracted from copper pyrites ore by heating in a blast furnace. The method is based on the principle that Show Answer

Q240) Super conductors are derived from compounds of Show Answer

Q241) On heating ammonium dichromate, the gas evolved is Show Answer

Q242) Lanthanide for which + II and + III oxidation states are common Show Answer

Q243) Vanadium (II) oxide is a strong Show Answer

Q244) Lanthanoids are Show Answer

Q245) Lanthanides and actinides resemble in Show Answer

Q246) In transition series, as the atomic number increases, paramagnetism Show Answer

Q247) Misch mental is Show Answer

Q248) Transition metals show paramagnetism Show Answer

Q249) Which of the following does not give a precipitate with excess of NaOH? Show Answer

Q250) Formula of green vitriol in Show Answer

Q251) Lead sesquioxide is Show Answer

Q252) Which of the following statement is not correct Show Answer

Q253) Which of the following statement is wrong? Show Answer

Q254) The final product on the reduction of mercury (II) chloride is Show Answer

Q255) Ammonium dichromate is used in fireworks. The green coloured powder blown in air is Show Answer

Q256) The chemical composition of slag formed during the smelting process in the extraction of copper is Show Answer

Q257) The colourless species is Show Answer

Q258) Which is colourless in water? Show Answer

Q259) Which of the following substances has least ionic character? Show Answer

Q260) The final step in the metallurgical extraction of Cu metal from Copper pyrites takes place in a Bessemer converter. The reaction taking place is Show Answer

Q261) In the extraction of iron, slag is produced which is Show Answer

Q262) Which of the following statement is not correct? Show Answer

Q263) General electronic configuration of lanthanides is Show Answer

Q264) Parke's process is used Show Answer

Q265) The colourless species is Show Answer

Q266) The aqueous solution containing which one of the following ions will be colourless? Show Answer

Q267) Which of the following is highly corrosive salt? Show Answer

Q268) Copper sulphate dissolves in excess of KCN to give Show Answer

Q269) In which of the following pairs are both the ions coloured in aqueous solution?
(At. no: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27) Show Answer

Q270) The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr (24) and Mn (25) is: Show Answer

Q271) Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states? Show Answer

Q272) Which of the following complex ions is expected to absorb visible light?
(At. no. Zn = 30, Sc = 21, Ti = 22, C r = 24) Show Answer

Q273) Which one of the following ions has the maximum magnetic moment? Show Answer

Q274) Which of the following ions will exhibit colour in aqueous solutions? Show Answer

Q275) Which of the following pairs has the same size? Show Answer

Q276) In the first transition series, the element with highest melting point is Show Answer

Q277) Zr and Hf have almost equal atomic radii and ionic radii because of Show Answer

Q278) The maximum oxidation state of Os is Show Answer

Q279) Ammonium dichromate is used in fire works. The green coloured powder blown in air is Show Answer

Q280) Which of the following metals is used in incandescent lamps? Show Answer

Q281) Which of the following is paramagnetic? Show Answer

Q282) Percentage of gold in 18 carat gold is : Show Answer

Q283) Copper sulphate solution reacts with KCN to form Show Answer

Q284) The outer shell electronic configuration of Gd (Z = 64) is Show Answer

Q285) The stable oxidation state of Ce (Z = 58) is Show Answer

Q286) Chromyl chloride is Show Answer

Q287) Which of the following has maximum number of unpaired electrons? Show Answer

Q288) The orange colour of dichromate solution changes to yellow on heating with alkalies due to the formation of Show Answer

Q289) In which of the following set, all the ions are white? Show Answer

Q290) Which of the following statements is false? Show Answer

Q291) Which of the following is most acidic? Show Answer

Q292) Which of the following is ionic? Show Answer

Q293) Which of the following oxoanion is not possible? Show Answer

Q294) Which of the following is least basic? Show Answer

Q295) Which of the following is explosively unstable? Show Answer

Q296) Which of the following metal exhibits more than one oxidation states? Show Answer

Q297) Which is not amphoteric? Show Answer

Q298) Which one of the following metal ions is colourless? Show Answer

Q299) Both acid and base may react with which of the following oxides? Show Answer

Q300) Automobile engine blocks are made of Show Answer

Q301) The common oxidation states of Ti are Show Answer

Q302) Transition metals Show Answer

Q303) Variable valency is exhibited by Show Answer

Q304) Which of the following element does not belong to first transition series? Show Answer

Q305) Stainless steel contains iron and carbon along with Show Answer

Q306) Zn does not show variable valency because of Show Answer

Q307) A characteristic feature of transition elements is that Show Answer

Q308) One of the following is false for Hg Show Answer

Q309) The elements which exhibit both vertical and horizontal similarities are Show Answer

Q310) The number of unpaird electrons in a nickel atom (ground state) are (At. No. of Ni = 28) Show Answer

Q311) An important ore of copper is Show Answer

Q312) Superconductors are derived from compounds of Show Answer

Q313) Which of the following is not an ore of iron? Show Answer

Q314) Which of the following is a carbonate ore? Show Answer

Q315) Bell metal in an alloy of Show Answer

Q316) The electronic configuration of the element which is just above the element with atomic number 43 in the same periodic group is Show Answer

Q317) German silver does not contain Show Answer

Q318) Nessler's reagent is Show Answer

Q319) The formula of haematite is Show Answer

Q320) Coinage metals show the properties of Show Answer

Q321) Which of the following types of metals make the most efficient catalysts? Show Answer

Q322) Which of the following ions having following electronic configuration would have maximum magnetic moment? Show Answer

Q323) Choose the correct statement for transition element? Show Answer

Q324) Which of the following contains maximum number of unpaired electrons? Show Answer

Q325) The number of water molecules in Mohr's salt is Show Answer

Q326) Which one of the following ionic species will impart colour to an aqueous solution? Show Answer

Q327) Which of the following transition elements shows the highest oxidation state? Show Answer

Q328) Zinc and mercury do not show variable valency like d-block elements because Show Answer

Q329) Titanium shows magnetic moment of 1.73 BM in its compound. What is the oxidation number of Ti in the compound? Show Answer

Q330) Which is colourless in water? Show Answer

Q331) The alloy best suited for making meter scales is Show Answer

Q332) In the ground state, an element has 13 electrons in its "M shell". The element is ..... Show Answer

Q333) Which one of the following is an example of non-typical transition elements? Show Answer

Q334) Which of the following is a transition element? Show Answer

Q335) A non-copper alloy is Show Answer

Q336) German silver is an alloy of copper and Show Answer

Q337) Which one of the following metal ions is coloured? Show Answer

Q338) Which one of the following transition metal ions has the lowest density? Show Answer

Q339) Which of the following oxide of manganese is amphoteric? Show Answer

Q340) Which metal is present in brass, bronze and German silver? Show Answer

Q341) Mercury sticks to the surface of the glass when it comes in contact with Show Answer

Q342) Which of the following configuration is correct for iron? Show Answer

Q343) Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are Show Answer

Q344) Which of the following substances has least ionic character? Show Answer

Q345) Transition metals mostly are Show Answer

Q346) The atomic number (Z) of an element is 25. In its ground state, how many electrons are present in the "N" shell? Show Answer

Q347) In potassium manganate, the oxidation state of manganese is Show Answer

Q348) Which one of the following pairs of ions have the same electronic configuration? Show Answer

Q349) Nessler's reagent is Show Answer

Q350) Green vitriol is Show Answer

Q351) Which of the following does not have valence electrons in 3d - subshell? Show Answer

Q352) Which of the following compounds has colour but no unpaired electrons? Show Answer

Q353) The basic character of the transition metal monoxides follows the order. Show Answer

Q354) A few Cu(I) salts are coloured. The colour arises from Show Answer

Q355) The melting point of copper is higher than that of zinc because Show Answer

Q356) The melting points of Cu, Ag and Au follow the order Show Answer

Q357) Which of the following is known as 'philosopher's wool'? Show Answer

Q358) Matte contains Show Answer

Q359) In the aqueous solution, Cu(+1) salts are unstable because Show Answer

Q360) Which of the following compounds is known as bornite or peacocks ore? Show Answer

Q361) Lithopone is a white pigment, and is a mixture of Show Answer

Q362) The first ionisation energies of the elements of the first transition series (Ti to Cu) Show Answer

Q363) Which of the following transition metal ions will have definite value of magnetic moment? Show Answer

Q364) Which of the following compounds is used as the starting material for the preparation of potassium dichromate? Show Answer

Q365) The last electron in d-block elements goes to Show Answer

Q366) Bonding in ferric chloride is Show Answer

Q367) Manganese achieves its highest oxidation state in its compound Show Answer

Q368) Which of the following is not correct about transition metals? Show Answer

Q369) Common oxidation state of scandium, a transition elemts, is/are (At. No. of Sc = 21) Show Answer

Q370) Besides Zn and Cu, German silver contains the metal Show Answer

Q371) Which of the following metals is sometimes found in native state in nature? Show Answer

Q372) The correct formula of permanganic acid is Show Answer

Q373) Which of the following is not a property of the transition elements? Show Answer

Q374) Which ion is detected by Nessler's reagent? Show Answer

Q375) The trace metal present is insulin is Show Answer

Q376) Bordeaux used as fungicide is a mixture of Show Answer

Q377) Which of the following is ionic in nature? Show Answer

Q378) Stainless steel contains Show Answer

Q379) Brass is an alloy of Show Answer

Q380) In Nessler's regent, the ion present is Show Answer

Q381) Cuprous ion is colourless while cupric ion is coloured because Show Answer

Q382) Cuprous ore among the following is Show Answer

Q383) Iron loses ferromagentic property at Show Answer

Q384) In which metal complex central atom is zerovalent? Show Answer

Q385) Pick out the wrong reaction from Show Answer

Q386) An atom with atomic number 21 belongs to the category of Show Answer

Q387) The number of unpaired electrons in ferrous ion (Z = 26) is Show Answer

Q388) The 3 d- series starts from Show Answer

Q389) In Cu (Z = 29) Show Answer

Q390) Turnbull's blue is a compound called Show Answer

Q391) Mercurous ion is represented as Show Answer

Q392) The valence shell of transition elements consists of Show Answer

Q393) In Ziegler-Natta polymerisation of ethylene, the active species is Show Answer

Q394) Invar, an alloy of Fe and Ni is used in watches and meter scales. Its characteristic property is Show Answer

Q395) What is the general outer configuration of the coinage metals? Show Answer

Q396) Cassiterite is an ore of Show Answer

Q397) Which of the following reactions is possible at anode? Show Answer

Q398) Copper can be extracted from Show Answer

Q399) Which of the following dissolves in hot conc. NaOH? Show Answer

Q400) One of the constituents of German silver is Show Answer

Q401) Among the following statements, the incorrect one is Show Answer

Q402) Which ore contains both iron and copper? Show Answer

Q403) Among the lanthanoids the one obtained by synthetic method is Show Answer

Q404) The most common lanthanoid is Show Answer

Q405) A useful member of lanthanoids is Show Answer

Q406) The electronic configuration of gadolinium (At. No. 64) is Show Answer

Q407) General electronic configuration of lanthanoids is Show Answer

Q408) In which of the following lanthadoids, oxidation state +2 is most stable? Show Answer

Q409) Non - lanthanoid atom is Show Answer

Q410) Lanthanoids and actinoids resemble in Show Answer

Q411) Misch metal is Show Answer

Q412) Which of the following statements is not correct? Show Answer

Q413) Lanthanoids are Show Answer

Q414) Lanthanoid for which +2 and +3 oxidation states are common is Show Answer

Q415) The +3 ion of which one of the following has half filled 4f subshell? Show Answer

Q416) Which of the following is not a coinage metal? Show Answer

Q417) The higher number of unpaired electrons is in Show Answer

Q418) Which of the following is more paramagnetic? Show Answer

Q419) Transition metal with higher oxidation number will act as Show Answer

Q420) The least stable oxide at room temperature is Show Answer

Q421) In which of these processes platinum is used as a catalyst? Show Answer