Fission of Covalent Bond MCQs

By: Prof. Dr. Fazal Rehman | Last updated: November 23, 2024

1. What is the breaking of a covalent bond in such a way that every atom separates with one electron of a shared pair called?

(A). Morpholytic fission
(B). Heterolytic fission
(C). Monolytic fission
(D). None of these
(E). Homolytic fission

Multiple Choice Question Answer: e

2. A covalent bond between two atoms is broken in different ways depending upon which of the following?

(A). Nature of attacking reagent
(B). All of these
(C). Reaction conditions
(D). Nature of given organic compound
(E). None of these

Multiple Choice Question Answer: b

3. Which of the following is the incorrect statement?

(A). None of the mentioned
(B). The Fission of the covalent bond always leads to the generation of an intermediate organic species
(C). Presence of the reactive intermediates is always confirmed by their detection by the spectroscopic methods
(D). They are stable and long-lived
(E). None of these

Multiple Choice Question Answer: b

4. What is the breaking of a covalent bond in such a way that both electrons of the shared pair are carried away by one of the atoms called?

(A). Morpholytic fission
(B). Monolytic fission
(C). Heterolytic fission
(D). Homolytic fission
(E). None of these

Multiple Choice Question Answer: c

5. Which of the following is the incorrect statement?

(A). The Heterolytic fission always takes place in the polar solvent
(B). The Cations and the anions formed are always carbon-based
(C). None of the mentioned
(D). The Heterolytic fission always takes place mostly at the higher temperatures
(E). None of these

Multiple Choice Question Answer: d

6. The intermediate organic species based on carbon formed by homolytic fission is ____________

(A). Carbenes
(B). Carbanions
(C). Free radicals
(D). Carbo-cations
(E). None of these

Multiple Choice Question Answer: c

7. The Heterolytic fission takes place between two atoms of widely different with what?

(A). Viscosity
(B). Electronegativity
(C). Conductivity
(D). All of these
(E). None of these

Multiple Choice Question Answer: b

8. The intermediate organic species based on carbon formed by photolysis is ___________

(A). Carbenes
(B). Carbo-cations
(C). Carbanions
(D). Free radicals
(E). None of these

Multiple Choice Question Answer: a

9. Which of the following is the shape of carbanion?

(A). Bent
(B). Trigonal planar
(C). Linear
(D). Pyramidal
(E). None of these

Multiple Choice Question Answer: d

10. The Triplet carbene is always much stable than the singlet carbene.

(A). True
(B). False
(C). Partially true

Multiple Choice Question Answer: a

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