Hyperconjugation and Inductive Effect MCQs

1. ________ is known as the Baker-Nathan effect

(A) Hyperconjugation

(B) Inductive effect

(C) Mesomeric effect

(D) Electromeric effect

2. How does electronegativity get affected by a negative oxidation state?

(A) It decreases

(B) It increases

(C) It remains constant

(D) None of the mentioned

3. The consequence of the Baker-Nathan effect is _______

(A) All of the mentioned

(B) Helpful in explaining directive influence of alkyl groups in aromatic compounds

(C) Helpful in explaining stability of alkyl carbocations

(D) Helpful in explaining stability of alkenes

4. The permanent electron displacement effect is _______

(A) Electromeric

(B) Inductive

(C) Inductomeric

(D) All of the mentioned

5. The larger the number of hyperconjugation structures, the _______ the stability of free radicals.

(A) None of the mentioned

(B) Decrease

(C) Increase

(D) Remains the same

6. On increasing the number of α-hydrogens, the number of hyperconjugation structures will _______

(A) Increase

(B) Remain the same

(C) Decrease

(D) None of the mentioned

7. Which of the following compounds can be most readily sulphonated?

(A) Benzene

(B) Toluene

(C) Nitrobenzene

(D) Chlorobenzene

8. The application of the inductive effect includes _______

(A) Bond length

(B) Dipole moment

(C) Strength of carboxylic acids

(D) All of the mentioned

9. What is the resonance energy (kCal/mol) of tertiary butyl?

(A) 12

(B) 10

(C) 11

(D) 9

10. The relative basic strength of amines never depends on which of the following?

(A) Inductive effect

(B) Mesomeric effect

(C) Steric effect

(D) Stabilization of cation by hydration

11. Due to the presence of a C–X polar bond, alkyl halides are _______

(A) None of the mentioned

(B) Less reactive than corresponding alkanes

(C) Equally reactive as corresponding alkanes

(D) More reactive than corresponding alkanes

12. When contributing structures contain the same number of two-electron bonds as the normal Lewis formula, this is called:

(A) Sacrificial hyperconjugation

(B) Isovalent hyperconjugation

(C) Heterovalent hyperconjugation

(D) All of the mentioned

13. Electronegativity depends on:

(A) Hybridization

(B) Both valence state and hybridization

(C) Valence state of an atom

(D) None of the mentioned

14. How is electronegativity defined?

(A) The power of an atom in a molecule to repel electrons towards itself

(B) The power of an atom in a molecule to expand itself

(C) The power of an atom in a molecule to attract electrons towards itself

(D) All of the mentioned

15. Hyperconjugation involves delocalization of:

(A) σ bond orbital

(B) p bond orbital

(C) Both σ and π bond orbitals

(D) None of the mentioned

16. Number of hyperconjugation structures in isopropyl radical is:

(A) 3

(B) 6

(C) 9

(D) 12

17. Electronegativity of an sp² hybridized atom is:

(A) 2.75

(B) 2.48

(C) 3.69

(D) 3.29

18. Arrange the following in order of decreasing (–I) effect:

COOH > F > Cl > Br > I > H’)”> (A) CN > F > Br > Cl > COOH > I > H

COOH > F > Cl > Br > I > H’)”> (B) H > COOH > CN > I > Cl > F > Cl

COOH > F > Cl > Br > I > H’)”> (C) CN > COOH > F > Cl > Br > I > H

COOH > F > Cl > Br > I > H’)”> (D) COOH > CN > F > Br > Cl > I > H