d- and f- Block Elements  MCQs

MCQs of d- and f- Block Elements

Showing 41 to 50 out of 158 Questions
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41.
Which of the following ion is coloured in water ?
(a) Lu3+(z=71)
(b) Sc3+(z=21)
(c) La3+(z=57)
(d) Ti3+(z=22)
Answer:

Option (d)

42.
Which is paramagnetic from the following ? Fe2+,Zn0,Hg2+,Ti+4
(a) only Fe2+
(b) Zn0 and Ti+4
(c) Fe22+ and Hg2+
(d) Zn0 and Hg2+
Answer:

Option (a)

43.
Which compound is not possible of Titanium (z=22) ?
(a) TiO2
(b) K2TiF6
(c) TiCl3
(d) K2TiO4
Answer:

Option (d)

44.
Which of the following elements is of d- block even then it is not transition element ?
(a) Cu
(b) Cr
(c) Fe
(d) Hg
Answer:

Option (d)

45.
The aqueous solution of which of the following ions is green coloured ?
(a) Co2+
(b) Zn2+
(c) Ni2+
(d) Cr2+
Answer:

Option (c)

46.
Which of the following ions in its aqueous solution possesses the value of magnetic moment as 3.87 ?
(a) Cu2+
(b) Cr3+
(c) Co3+
(d) Fe3+
Answer:

Option (b)

47.
What is the oxidation state of V in vanadates ?
(a) +3
(b) +4
(c) +5
(d) +2
Answer:

Option (c)

48.
Which of the following metals form complex in zero oxidation state ?
(a) Cu
(b) Ni
(c) Mn
(d) V
Answer:

Option (b)

49.
What is the general electronic configuration of actinide series ?
(a) [Xe] 4f0-14 5d0-1 6s2
(b) [Xe] 4f0-14 5d0-10 6s2
(c) [Xe] 5f0-14 5d0-2 6s2
(d) [Xe] 5f0-10 5d0-2 6s2
Answer:

Option (c)

50.
State the number of unpaired electrons in Ni2+ .
(a) 0
(b) 2
(c) 4
(d) 8
Answer:

Option (b)

Showing 41 to 50 out of 158 Questions
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