NCERT Class 11 Chapter 4 Chemistry Chemical Bonding and Molecular Structure MCQ

NCERT Class 11 Chapter 4 Chemistry Chemical Bonding and Molecular Structure MCQ | Questions & Answers: Give a try for the NCERT Class 11 Chapter 4 Chemistry Chemical Bonding and Molecular Structure MCQ Quiz and get to know how much knowledge you have in the particular area. Good Luck!

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1. The attractive force which holds various constituents (atoms, ions etc.) together in different chemical species is called a

A. chemical bond

B. ionic bond

C. chemical compound

D. covalent bond

2. The evolution of various theories of valence and the interpretation of the nature of chemical bonds have closely been related to the developments in the understanding of

A. All of the above

B. periodic table

C. electronic configuration of elements

D. structure of atom

3. Who provide explanation of valence based on intertness of noble gases ?

A. Kossel-Lewis

B. Sidgwick & Powell

C. Lewis

D. Langmuir

4. In the formation of a molecule which of the following take part in chemical combination?

A. valence electron

B. cation

C. anion

D. inner shell electron

5. The bond formed as a result of the electrostatic attraction between the positive and negative ions is termed as ...

A. Electrovalent bond

B. Covalent bond

C. Chemical bond

D. Co-ordinate bond

6. Cation and anion combines in a crystal to form following type of compound

A. ionic

B. covalent

C. metallic

D. dipole-dipole

7. Electrovalence of calcium and chlorine respectively is

A. + 2, – 1

B. 1, – 2

C. + 1, – 1

D. + 2, – 2

8. When a metal atom combines with non-metal atom, the non-metal atom will

A. gain electrons and increase in size

B. gain electrons and increase in size

C. lose electrons and increase in size

D. lose electrons and decrease in size

9. In N₂ molecule, the number of electrons shared by each nitrogen atom is

A. 3

B. 2

C. 5

D. None of these

10. The lowest energy structure is the one with the ______ formal charges on the atoms.

A. smallest

B. highest

C. zero

D. negative

11. In the cyanide ion, the formal negative charge is on

A. N

B. C

C. Both C and N

D. Resonate between C and N

12. What are the exceptions of the octet rule ?

A. All of these

B. Expanded octet of the central atom

C. An odd number of electrons on the central atom

D. The incomplete octet of central atom

13. In which of the following molecules octet rule is not followed?

A. NO

B. CH₄

C. NH₃

D. CO₂

14. Among the following the electron deficient compound is

A. BCl₃

B. PCl5

C. CCl₄

D. BeCl₂

15. Which of the following is the electron deficient molecule?

A. B₂H₆

B. PH₃

C. SiH₄

D. None of these

16. Which of the following compounds does not follow the octet rule for electron distribution?

A. PCl₅

B. H₂O

C. PH₃

D. PCl₃

17. Which of the following pairs will form the most stable ionic bond ?

A. Mg and F

B. Na and F

C. Na and Cl

D. Li and F

18. Which of the following methods is used for measuring bond length ?

A. All of these

B. Spectroscopic techniques

C. Electron-diffraction

D. X-ray diffraction

19. _______ is measured as the radius of an atom’s core which is in contact with the core of an adjacent atom in a bonded situation.

A. Covalent radius

B. Ionic radius

C. Bond length

D. van der Waal’s radius

20. All the bond lengths of sulphur – oxygen in sulphate ion, are equal because of:

A. resonance

B. symmetry

C. high electronegativity of oxygen

D. None of these

21. The bond length between hybridised carbon atom and other carbon atom is minimum in

A. Propane

B. Butane

C. Propene

D. Propyne

22. The number of nodal planes present in s × s antibonding orbitals is

A. 1

B. 2

C. 0

D. 3

23. The hybrid state of sulfur in SO₂ molecule is :

A. sp²

B. sp³

C. sp

D. sp³d

24. Which one of the following does not have sp² hybridized carbon?

A. Acetone

B. Acetic acid

C. Acetonitrile

D. Acetamide

25. Which of the following will have the lowest boiling point?

A. 2-MethylButane

B. 2-MethylPropane

C. 2,2-Dimethylpropane

D. n-Pentane

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26. Among the following, the maximum covalent character is shown by the compound

A. MgCl₂

B. FeCl₂

C. SnCl₂

D. AlCl₃