d- and f- Block Elements  MCQs

MCQs of d- and f- Block Elements

Showing 71 to 80 out of 158 Questions
5 6 7 8 9 10
71.
Which of the following is a coloured compound ?
(a) Ag2SO4
(b) CuF2
(c) MgF2
(d) CuCl
Answer:

Option (b)

72.
Which of the following ions is colourless ?
(a) Mn2+
(b) Sc3+
(c) Ti3+
(d) Cu2+
Answer:

Option (b)

73.
Which electronic configuration can show maximum magnetic moment ?
(a) 3 d8
(b) 3 d5
(c) 3 d6
(d) 3 d9
Answer:

Option (b)

74.
Which of the following ions gives colourless aqueous solution ?
(a) Cu2+
(b) Cu+
(c) Fe2+
(d) Ni2+
Answer:

Option (b)

75.
Which is the ion of V that has magnetic moment equal to 1.73 BM ?
(a) V2+
(b) V3+
(c) V5+
(d) V4+
Answer:

Option (d)

76.
In which of the following pairs of ions, both ions have the same value of magnetic moment ?
(a) Ti2+(z=22) and Cu2+(z=29)
(b) V2+(z=23) and Fe2+(z=26)
(c) Mn2+(z=25) and Ni2+(z=28)
(d) Mn2+(z=25) and Fe3+(z=26)
Answer:

Option (d)

77.
By which of the following formulae can the magnetic moment due to spin only be determined ?
(a) n (n + 1)
(b) (n + 1)2-(1)2
(c) n( n - 2)
(d) n( n - 1)
Answer:

Option (b)

78.
If theoretical magnetic moment of a Mn - compound is 3.87 BM, what is the oxidation state of Mn ?
(a) +3
(b) +4
(c) +2
(d) +5
Answer:

Option (b)

79.
Which of the following transition ions will have maximum magnetic moment ?
(a) MnSO4
(b) Cr2(SO4)3
(c) FeSO4
(d) CuSO4
Answer:

Option (a)

80.
Which of the following ions will give coloured aqueous solution ?
(a) TiCl2
(b) ZnCl2
(c) CdCl2
(d) Hg2Cl2
Answer:

Option (a)

Showing 71 to 80 out of 158 Questions
5 6 7 8 9 10