CBSE Class 12 The d-and f-Block with Answers Multiple Choice Questions with Answers. MCQ Questions Class 12 The d-and f-Block with Answers with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 The d-and f-Block with Answers MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 The d-and f-Block with Answers - Set - 3
Question 1:
Which one of the following transition element has the lowest value of enthalpy of atomisation?
(a) Cr
(b) Cu
(c) Zn
(d) M
Correct Answer – (C)
Question 2:
Cupric compounds are more stable than their cuprous counterparts in solid state. This is because
(a) the endothermic character of the 2nd IP of Cu is not so high
(b) size of Cu2+ is less than Cu+
(c) Cu2+ has stable electronic configurations compared to cu+
(d) the lattice energy released for cupric compounds is must higher than Cu+
Correct Answer – (D)
Question 3:
The electronic configuration of Cu is
(a) [Ne] 3s2 ,3p6 ,3d9 ,4s2
(b) [Ne] 3s2 , 3p6 ,3d10 ,4s1
(c) [Ne] 3s2 ,3p6 ,3d3 ,4s2 ,4p6
(d) [Ne] 3s2 ,3p5 ,3d5 ,4s2 ,4p4
Correct Answer – (B)
Question 4:
The element which forms ions in dimeric state is
(a) mercury
(b) nickel
(c) iron
(d) cadmium
Correct Answer – (A)
Question 5:
Which of the following has the maximum unpaired d-electrons?
(a) Fe2+
(b) Cu+
(c) Zn
(d) Ni3+
Correct Answer – (A)
MCQ Questions Class 12 The d-and f-Block With Answers
Question 6:
Which is not true for describing the catalytic activity of transition metals?
(a) Their ability to adopt multiple oxidation states
(b) Their ability to form bonds between reactant molecule and atoms of the surface of catalysts
(c) Increasing the concentration of reactants at the catalyst surface
(d) Strengthening the bonds in the reacting molecules
Correct Answer – (D)
Question 7:
Metal ion responsible for the Minamata disease is
(a) Co2+
(b) Hg2+
(c) Cu2+
(d) Zn2+
Correct Answer – (B)
Question 8:
Which one of these is not known?
(a) CuCl2
(b) Cul2
(c) CuF2
(d) CuBr2
Correct Answer – (B)
Question 9:
Which of the following does not represent the correct order of the property indicated?
(I) Sc3+ > Cr3+ > Fe3+ > Mn3+ — ionic radius
(II) Sc < Ti < Cr < Mn — density
(III) Mn2+ > Ni2+ > Co2+ < Fe2+ — ionic radius
(IV) FeO < CaO < MnO < CuO — basic natw·e
(a) I Only
(b) II & III
(c) I & III
(d) III & IV
Correct Answer – (C)
Question 10:
Mercury is a liquid metal because
(a) it has a completely filled d-orbital that causes d-d overlapping
(b) it has completely filled d-orbital that prevents d-d overlapping
(c) it has a completely filleds-orbital
(d) it has a small atomic size
Correct Answer – (B)
- NCERT Solutions Class 11 Chemistry Chapter 1 : Some Basic Concepts of Chemistry
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- NCERT Solutions Class 11 Chemistry Chapter 6 : Thermodynamics
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