d- and f- Block Elements  MCQs

MCQs of d- and f- Block Elements

Showing 1 to 10 out of 158 Questions
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1.
Elements of which groups are called d-block elements?
(a) Groups 1 to 2
(b) Groups 3 to 12
(c) Groups 13 to 18
(d) Groups 13 to 17
Answer:

Option (b)

2.
Which of the following elements is of d-block even then it is not transition element?
(a) Cu
(b) Ca
(c) Fe
(d) Hg
Answer:

Option (d)

3.
The aqueous solution of which of the following ions is green coloured?
(a) Co2+
(b)  Zn2+
(c)  Ni2+
(d)  Cr2+
Answer:

Option (c)

4.
What will be the order of energy of d- orbitals during their division in tetrahedral complex compound?
(a) dxy ≅ dyz ≅dxz < dx2 - y2 ≅ dz2
(b) dx2 - y 2 ≅ dz2 < dxy ≅ dyz ≅ dxz
(c) dx ≅ dz2 < dyz ≅ dxz ≅ dx2 - y2
(d) dx2 - y2 ≅ dxz < dxy ≅ dyz ≅ dz2
Answer:

Option (b)

5.
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)

6.
Select the most stable oxidation state of Fe.
(a) +2
(b) +3
(c) +4
(d) +5
Answer:

Option (b)

7.
Which of the following compounds of transition elements is used in dry cell ?
(a) V2O5 
(b) KMnO4
(c) K2Cr2O7
(d) MnO2
Answer:

Option (d)

8.
Which of the following elements is radioactive ?
(a) Pr
(b) Pm
(c) Gd
(d) Tm
Answer:

Option (b)

9.
What is the general electronic configuration of actinide series ?
(a) Xe4f0-145d0-16s2
(b) Xe4f0-145d0-106s2
(c) Rn5f0-145d0-26s2
(d) Rn5f0-145d0-27s2
Answer:

Option (d)

10.
Select the vanadate compound from the following.
(a) V2O3
(b) V2O5
(c) V4O8
(d) V3O6
Answer:

Option (b)

Showing 1 to 10 out of 158 Questions
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