Transition Elements (General Introduction, Electronic Configuration,...) NEET Questions

Inorganic Chemistry - D- and F-Block Elements

Transition Elements (General Introduction, Electronic Configuration,...) MCQ Questions


1.
Which of the following ions has the maximum number of unpaired electrons?

NEET - 2020

A.
Fe²⁺
B.
Mn²⁺
C.
Co²⁺
D.
Ni²⁺
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ANSWER :
B. Mn²⁺
2.
Which of the following d-block elements does not show variable oxidation states?
A.
Zn
B.
Cu
C.
Fe
D.
Cr
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ANSWER :
A. Zn
3.
Which compound is used as an oxidizing agent in acidic medium?
A.
K₂Cr₂O₇
B.
CaO
C.
MgCl₂
D.
CuSO₄
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ANSWER :
A. K₂Cr₂O₇
4.
What is the colour of Mn²⁺ ion in aqueous solution?
A.
Pink
B.
Blue
C.
Green
D.
Colorless
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ANSWER :
A. Pink
5.
Which of the following transition elements has the highest number of oxidation states?
A.
Vanadium
B.
Manganese
C.
Chromium
D.
Iron
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ANSWER :
B. Manganese
6.
The catalytic property of transition metals is due to
A.
their atomic size
B.
their incompletely filled d-orbitals
C.
their high ionisation enthalpy
D.
their variable electronegativity
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ANSWER :
B. their incompletely filled d-orbitals