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Class 12 Chemistry — Chapter 4: The d- and f-Block Elements
96 practice questions · 32 Easy · 32 Medium · 32 Hard
Free NCERT-aligned multiple-choice practice for Class 12 Chemistry, Chapter 4 (The d- and f-Block Elements). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 96.
Sample questions
Q1Easy
d-block elements have last electron in:
A.d-orbital✓ correct
B.s-orbital
C.p-orbital
D.f-orbital
Why
Penultimate shell d-orbital.
Q2Medium
Transition metals show:
A.Variable oxidation states✓ correct
B.Fixed +1 only
C.Only +2
D.None
Why
Close energies of (n−1)d and ns electrons.
Q3Hard
Why are many transition metals good catalysts?
A.Variable oxidation states + ability to adsorb reactants✓ correct
B.Low density
C.Soft texture
D.Coloured ions
Why
Provide alternative reaction pathways.
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