Micelles and Molecular Aggregation MCQs Questions Answers

By: Prof. Dr. Fazal Rehman | Last updated: November 27, 2024

1. The part of the stearate ion that is hydrophilic in nature is ____

(A). Head
(B). Hydrocarbon chain
(C). Tail
(D). None of these
(E). None of these

Multiple Choice Question Answer: a

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2. The molecular formula of the stearate ion is _____

(A). C35H17COO+
(B). C17H35COO–
(C). C35H17COO–
(D). C17H35COO+
(E). None of these

Multiple Choice Question Answer: b

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3. What happens to The number of molecules in a conduction band?

(A). Increases with a rise in temperature
(B). Decreases with a rise in temperature
(C). Increases with a fall in temperature
(D). Does not depend upon the temperature
(E). None of these

Multiple Choice Question Answer: a

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4. In water, non-polar molecules tend to aggregate because they are forced to come into close proximity with one another due to which of the following?

(A). Vander Waals interactions
(B). Hydrophilic interactions
(C). Hydrophobic interactions
(D). Electrovalent interactions
(E). None of these

Multiple Choice Question Answer: c

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5. The metallic bonds are non-directional due to _____

(A). There is no change in inter-kernel distance
(B). There is always a non-uniform distribution of the mobile valence electrons around its kernels
(C). There is always a uniform distribution of the mobile valence electrons around its kernels
(D). There is a change in inter-kernel distance
(E). None of these

Multiple Choice Question Answer: c

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6. Which of the following is The number of stearate ions required to form a micelle of colloidal size?

(A). 50
(B). 60
(C). 80
(D). 70
(E). None of these

Multiple Choice Question Answer: d

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7. The correct statement is that the soap micelle is _____

(A). Unstable because of the positive charge on its head
(B). Stable because of the positive charge on its head
(C). Stable because of the negative charge on its head
(D). Unstable because of the negative charge on its head
(E). None of these

Multiple Choice Question Answer: c

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8. The type of molecules that forms the aggregate through a self-assembly process which is driven by the hydrophobic effect is _______

(A). Electrophilic
(B). Ambiphilic
(C). Nucleophilic
(D). None of these
(E). None of these

Multiple Choice Question Answer: b

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9. Which of the following is The conductivity of micelles?

(A). Equals to a colloidal solution
(B). Lower than a colloidal solution
(C). Higher than a colloidal solution
(D). None of these
(E). None of these

Multiple Choice Question Answer: c

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10. Which of the following is The process by which individual molecules form the defined aggregate?

(A). Self-aggregation
(B). Aggregation
(C). Self-assembly
(D). Assembly
(E). None of these

Multiple Choice Question Answer: c

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11. Which of the following is The major cause of molecular aggregation?

(A). Inter-molecular interactions
(B). Induction
(C). Conduction
(D). Resonance
(E). None of these

Multiple Choice Question Answer: a

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12. Not a state of aggregation of matter is ________

(A). Solid
(B). None of these
(C). Plasma
(D). Liquid and Gas
(E). None of these

Multiple Choice Question Answer: b

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13. The inter-molecular interaction originates from the _____

(A). Magnetic properties of atoms
(B). Cohesive properties of atoms
(C). Electric properties of atoms
(D). None of these
(E). None of these

Multiple Choice Question Answer: c

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14. When do the Micelles behave as the colloids?

(A). Concentration is greater than CMC
(B). Concentration is equal to CMC
(C). Concentration is less than CMC
(D). They always behave as colloids
(E). None of these

Multiple Choice Question Answer: a

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15. Which of the following is The transition of ions to micelle?

(A). Irreversible
(B). Reversible
(C). All of these
(D). None of these
(E). None of these

Multiple Choice Question Answer: b

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16. _________ is the water-insoluble

(A). COO–
(B). C17H35
(C). Na+
(D). All of these
(E). None of these

Multiple Choice Question Answer: c

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