D-F Block Elements Transition Elements MCQs – 2

1) German silver is an alloy of
a) Ag and Cu
b) Cu, Sn, Ag
c) Cu, Zn, Ni
d) Cu, Ni, Fe, Mn

2) Bronze, used for making statues, coins and utensils, is an alloy of
a) Cu, Zn

b) Cu, Zn, Sn
c) Cu, Sn
d) Cu, Ni

3) Gun metal contains
a) Cu = 80%, Zn = 20%
b) Cu = 60%, Ni = 40%
c) Cu = 80%, Zn = 10%, Sn = 10%
d) Cu = 90%, Sn = 10%

4) Boiling CuCI2 with excess of copper turnings and conc. HCI gives
a)
b)
c)
d)

5) Which of the following on treatment with water turns blue ?
a)
b)
c)
d)

6) Bordeaux mixture which is used as a fungicide in agriculture is
a)
b)
c)
d)

7) Copper sulphate pentahydrate on heating at 423K gives
a)
b)
c)
d)

8) Bell metal is an alloy of
a) Cu, Pb and Sn
b) Sn and Cu
c) Zn and Pb
d) Zn, Cu and Sn

9) Blue vitriol is
a)
b)
c)
d)

10) Which of the following is not an ore of silver ?
a) Silver glance
b) Horn silver
c) German silver
d) Pyrargyrite

11) Pyrargyrite, an ore of silver is
a)
b)
c) AgCI
d)

12) For making jewellery, Ag and Au are alloyed with
a) Cu
b) Zn
c) Sn
d) Ni

13) 925 Fine silver means
a) 9.5% Ag + 90.75%Cu
b) 92.5% Ag +7.5% Cu
c) 9.25% Cu + 90.75% Ag
d) 7.5% Ag + 92.5% Au.

14) Which of the following oxides is least stable at room temperature ?
a) CuO
b)
c) ZnO
d)

15) Choose the least soluble of the following .
a)

b) AgF
c) AgCI
d) AgBr

16) Which of the following does not dissolve in NH3 solution ?
a) AgF
b) AgCl
c) AgBr
d) Agl

17) Photographic film is coated with an emulsion of
a)

b) AgF
c) AgBr
d)

18) The developer used in photography is an alkaline solution of
a) Hydroquinone
b) Glycerol
c) Phenol
d) Picric acid

19) The black image on an exposed and developed photographic film is composed of
a) Ag
b) AgBr
c)
d)

20) The fixer used in photography is
a)
b)
c)
d)

21) The silver salt most commonly used in photography is
a) AgCI
b) AgBr
c) Agl
d) AgF

22) Which of the following metals have the highest thermal and electrical conductivity ?
a) Copper
b) Silver
c) Zinc
d) Aluminium

23) Which of the following is not an ore of gold ?
a) Calaverite
b) Sylvanite
c) Bismuthaurite
d) Zincite

24) In the case of gold
a) + 1 state is more stable

b) + 3 state is more stable
c) Both + 1 and + 3 states have equal stability
d) None of these

25) A@ AuCI3 is obtained
a) By treating Au with HCI

b)
c) By heating Au metal with HCI gas
d) None of these

26) AuCI3 on heating gives
a) AuCI + Au2Cl
b)
c)
d) AuCl + Cl2

27) The principal ore of zinc is
a) Zincite
b) White vitriol
c) Zinc blende
d) Calamine

28) Calamine, the ore of zinc is
a)
b) ZnO
c) ZnS
d)

29) Zinc metal is refined by
a) Fractional crystallization
b) Fractional distillation alone
c) Electrolysis alone
d) Both by (b) and (c)

30) Zinc metal is commercially obtained from zinc oxide by reduction with
a) Aluminium
b) Sodium
c) Carbon
d) Magnesium.

31) Zinc metal dissolves in cold concentrated solution of
a) NaCI
b)
c) NaOH
d)

32) Which of the following sulphides is soluble in dil. HCI?
a) HgS
b) ZnS
c) CuS
d) PbS

33) Zinc is resistant to atmospheric corrosion because its surface is covered with a thin layer of
a) ZnO
b)
c)
d)

34) The impurities present in crude zinc metal are
a) Cd, Pb, Fe
b) Co, Ni, Fe
c) Cd, Hg, Cu
d) Mn, Cu, Ni

35) Zinc dust is obtained by
a) Crushing zinc metal
b) Burning zinc metal in air
c) Melting zinc and then atomising it with a blast of air
d) Roasting zinc sulphide

36) Which of the following is a constituent of lithopone ?
a)
b) ZnS
c)
d) ZnO

37) Cinnabar is an ore of
a) Lead
b) Zinc
c) Silver
d) Mercury

38) Which of the following sulphides when heated strongly in air gives the corresponding metal ?
a)
b) CuS
c) HgS
d) FeS

39) Mercury is extracted from cinnabar by
a) Heating in air to 773-873 K followed by condensation of vapours
b) Leaching with conc. NaOH solution followed by precipitation with zinc dust
c) Heating in air to 773-873 K by reduction with coke
d) None of the above.

40) The impurities of lead, tin and zinc are removed from mercury by treating impure mercury with
a) Dil. NaOH
b) Dil. HCI
c)
d)

41) Mercury is best purified by
a) Distillation under reduced pressure
b) Liquation
c) Zone refining
d) Van Arkel method

42) Among the following metals, interatomic forces are probably weakest in
a) Cu
b) Ag
c) Zn
d) Hg

43) Yellow mercury (II) oxide is obtained when
a) Hg is heated in excess of air at 623 K
b)
c) HgS is roasted in air
d)

44) Red and yellow mercury (II) oxides differ from each other in
a) Chemical composition
b) Only in particle size
c) Only in colour
d) Both in colour and particle size

45) Which one of the following ions exists as a dimer ?
a)
b)
c)
d)

46) Calomel is
a)
b)
c)
d)

47) The salt of mercury which is used to prepare a standard electrode is
a) Mercuric nitrate

b) Mercuric chloride
c) Mercuric nitrate
d) Mercurous chloride

48) Which of the following reactions is reversible ?
a)
b)
c)
d)

49) Which of the following is not an amphoteric oxide ?
a) HgO
b)
c) ZnO
d)

50) Mercury (II) chloride is also called
a) Calomel

b) Corrosive sublimate
c)
d)

51) @ When NH4OH is added to Hg2CI2, the solid turns black due to the formation of
a)

b)
c) Finely divided Hg
d)

52) @ When stannous chloride solution is added to HgCI2, the white precipitate produced is due to the formation of
a)

b)
c)
d)

53) Nesslers reagent is an alkaline solution of
a)
b)
c)
d)

54) The brown precipitate formed when Nesslers reagent is treated with any ammonium salt is due to the formation of
a)
b)
c)
d)

55) Cassiterite, the ore of tin is
a) SnO
b) SnS
c)
d)

56) Tin dissolves in hot alkali solution due to the formation of
a)
b)
c)
d)

57) With hot concentrated nitric acid, tin gives
a)
b)
c)
d)

58) When alkali is added to an aqueous solution of a tin (II) salt, stannous hydroxide gets precipitated. On addition of more alkali, the precipitate dissolves due to the formation of
a)
b)
c)
d)

59) Tinning of the brass utensils is done in order to
a) Prevent corrosion
b) Check attack by acids
c) get better heat conduction
d) Beautify the utensil

60) Tin (IV) oxide is
a) Acidic
b) Basic
c) Neutral
d) Amphoteric

61) Which of the following sulphides is soluble in ammonium polysulphide or yellow ammonium sulphide ?
a) CuS
b) HgS
c) SnS
d) PbS

62) Stannic chloride is hydrolysed by water to give
a) SnO
b)
c)
d)

63) Anhydrous stannous chloride can be prepared by
a)
b) Heating stannous chloride dihydrate
c) Reducing stannic chloride with mercury
d) Heating tin in a current of HCI vapours

64) Solder metal is an alloy of
a) Pb + Sn
b) Pb + Sb
c) Cu + Sn
d) Cu + Zn

65) Which of the following is not an ore of lead ?
a) Galena
b) Anglesite
c) Cerussite
d) Cassiterite

66) The principal ore of lead is
a)
b) PbS
c)
d)

67) Which of the following sulphides when heated in air may give the corresponding sulphate ?
a) CuS
b) HgS
c) PbS
d) FeS

68) Plumbosolvency means dissolution of lead in
a) Ordinary water
b) Hot water
c) Acids
d) Alkalies

69) Plumbosolvency is represented by the reaction
a)
b)
c)
d)

70) Lead may be replaced from its salt solution by
a) Copper
b) Gold
c) Magnesium
d) Silver

71) Lead dioxide is obtained when
a) Lead is heated in air at 573 K
b) Lead nitrate is heated
c)
d) Litharge is heated in excess of air at 623 K

72) Which of the following lead compounds is most stable?
a)

b)
c)
d)

73) Which of the following has the maximum ionic character ?
a)
b)
c)
d)

74) Pewter which is used for making utensils is an alloy of
a) Pb and Sn
b) Pb, Sn and Sb
c) Cu and Sn
d) Cu and Zn

75) Which of the following is not covalent ?
a)
b)
c)
d)

76) Lead tetrachloride on hydrolysis gives
a) PbO
b)
c)
d)

77) Which of the following cannot be used for oxidation of conc. HCl to Cl2 gas ?
a)
b)
c) PbO
d)

78) Which one of the following is known as Lunar Caustic when it exists in the fused state ?
a) Silver nitrate

b) Silver sulphate
c) Silver chloride
d) Sodium sulphate

79) Which of the following ions is colourless ?
a)

b)
c)
d)

80) Ag can be obtained from AgCl by reacting with
a)

b)
c)
d)

81) H2S is passed through an acidified solution of Ag, Cu and Zn.Which forms a precipitate?
a)

b)
c)
d)

82) Which of the nitrates on heating strongly leaves the metal as the residue ?
a)
b)
c)
d)

83) What is the electronic configuration of Cu2+ (Z=29) ?
a)
b)
c)
d)

84) Which of the following is used in medicine ?
a)
b)
c)
d)

85) Aqueous solution of Cu (II) gives an intense blue coloured solution with ammonia which is due to
a)

b)
c)
d)

86) Gold is not used in
a)
b)
c)
d)

87) The metal halide which is insoluble in water is
a)

b)
c)
d)

88) AgF is soluble in water, while other silver halides are insoluble, because the
a) Hydration energy of AgF is greater than the lattice energy
b) Hydration energy of AgF is smaller than the lattice energy
c) Hydration energy is equal to the lattice energy of AgF
d) None

89) Which of the following metals will not react with a solution of ?
a) Fe
b) Zn
c) Mg
d) Hg

90) Which of the following does not react with AgCl ?
a)
b)
c)
d)

91) The geometry of the complex is
a) Square planar
b) Tetrahedral
c) Triangular bipyramid
d) Octahedral

92) An anion solution gives a white precipitate with solution. The precipitate dissolves in dilute ammonia due to the formation of
a)

b)
c)
d)

93) The important oxidation states of copper are
a) +2 and +1
b) +1 and +3
c) +3 and +4
d) +4 and +2

94) In solid , copper is co-ordinated to
a)

b)
c)
d)

95) The percentage of gold in Fools gold is
a)

b)
c)
d)

96) Which of the following is soluble in ammonia ?
a)
b)
c)
d)

97) Gold dissolves in aqua regia forming
a)

b)
c)
d)

98) 860 fine silver means
a)
b)
c)
d)

99) An alloy containing 80% Ag and 20% Cu is usually called
a) Sterling silver

b) Worm silver
c) Silver amalgam
d) Coinage silver

100) Which of the following is paramagnetic ?
a)
b)
c)
d) None


Answer

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