Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure MCQ Questions With Answers

1 Which of the following is a linear molecule?

A ClO₂

B CO₂

C NO₂

D SO₂

Answer:CO₂

2 The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent sp² orbitals. The total number of sigma (s) and pi (p) bonds in ethene molecule is

A 1 sigma (s) and 2 pi (p) bonds

B 3 sigma (s) and 2 pi (p) bonds

C 4 sigma (s) and 1 pi (p) bonds

D 5 sigma (s) and 1 pi (p) bonds

View Answer

Answer:5 sigma (s) and 1 pi (p) bonds

3 The structure of IF₇ is

A Pentagonal bipyramid

B Square pyramid

C Trigonal bipyramid

D Octahedral

View Answer

Answer:Pentagonal bipyramid

4 The species having pyramidal shape is

A SO₃

B BrF₃

C SiO₃^2-

D OSF₂

View Answer

Answer:OSF₂

5 The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing order of the polarizing power of the cationic species, K⁺, Ca⁺⁺, Mg²⁺, Be²⁺?

A Ca²⁺ < Mg²⁺ < Be⁺ < K⁺

B Mg²⁺ < Be²⁺ < K⁺ < Ca²⁺

C Be²⁺ < K⁺ < Ca²⁺ < Mg²⁺

D K⁺ < Ca²⁺ < Mg²⁺ < Be²⁺

View Answer

Answer:K⁺ < Ca²⁺ < Mg²⁺ < Be²⁺

6 Among the following mixtures, dipole-dipole as the major interaction, is present in

A benzene and ethanol

B acetonitrile and acetone

C KCl and water

D benzene and carbon tetrachloride

View Answer

Answer: acetonitrile and acetone

7 Dipole-induced dipole interactions are present in which of the following pairs?

A H₂O and alcohol

B Cl₂ and CCl₄

C HCl and He atoms

D SiF₄ and He atoms

View Answer

Answer:HCl and He atoms

8 Based on lattice enthalpy and other considerations which one the following alkali metals chlorides is expected to have the higher melting point?

A RbCl

B KCl

C NaCl

D LiCl

View Answer

Answer:NaCl

9 The number of types of bonds between two carbon atoms in calcium carbide is

A Two sigma, two pi

B One sigma, two pi

C One sigma, one pi

D Two sigma, one pi

View Answer

Answer: One sigma, two pi

10 The maximum number of hydrogen bonds that a molecule of water can have is

A 1

B 2

C 3

D 4

View Answer

Answer:4

11 An atom of an element A has three electrons in its outermost orbit and that of B has six electrons in its outermost orbit. The formula of the compound between these two will be

A A₃B₆

B A₂B₃

C A₃B₂

D A₂B

View Answer