d- and f- Block Elements  MCQs

MCQs of d- and f- Block Elements

Showing 31 to 40 out of 158 Questions
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31.
Which alloy is used in preparation of metal and currency coins ?
(a) Bronze
(b) Brass
(c) German-silver
(d) Nichrome
Answer:

Option (a)

32.
Which alloy is used in filling in the cavity of the tooth ?
(a) Germansilver
(b) Mercury - amalgum
(c) Cupronickel
(d) Nitinol
Answer:

Option (b)

33.
Which chemical is used as areagent in chemical demand (COD) measurement in polluted water ?
(a) KMnO4
(b) K2CrO4
(c) K2Cr2O7
(d) K2MnO4
Answer:

Option (c)

34.
Which alloy is used in preparation of ornaments ?
(a) Gold and Copper
(b) Gold and Silver
(c) Gold and Platinum
(d) Gold and Bronze
Answer:

Option (a)

35.
Which element is radioactive among Lathanoid elements ?
(a) Cemerium
(b) Promethium
(c) Lanthanium
(d) Prismodimiyum
Answer:

Option (b)

36.
What in used in the optical glass of a camera ?
(a) Gadolinium sulphate
(b) Lanthanoids oxides
(c) Ceric compounds
(d) Pyropheric alloy
Answer:

Option (b)

37.
Which metal from the following is used in production of atomic energy ?
(a) Uranium
(b) Platonium
(c) Thorium
(d) All of the above
Answer:

Option (d)

38.
Which element forms amalgum ?
(a) Fe
(b) Mg
(c) Zn
(d) Pb
Answer:

Option (c)

39.
Which of the following is colourless ?
(a) CuCl
(b) K3[Cu(CN)4]
(c) CuF2
(d) [Cu(CH3(N)4)]BF4
Answer:

Option (c)

40.
Which maximum oxidation state possessed by actinide ?
(a) +5
(b) +4
(c) +7
(d) +8
Answer:

Option (c)

Showing 31 to 40 out of 158 Questions
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