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UPSC CAPF AC Paper - I
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Assertion (A) Collodial solutions scatter light while true solutions do not.

Reason (R) The particles in the colloidal solutions move much slower than that of the true solution.

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Important Questions on Chemistry

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 16

Consider the following statements:

1. Reactions in which heat is released along with the formation of products are called exothermic chemical reactions.
2. Reactions in which energy is absorbed, are known as endothermic reactions.

Which of the statements given above is/are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 17
What is the role of a positive catalyst in a chemical reaction?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 18
Which one of the following is not a chemical change?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 19
The activation energy of a reaction is zero. The rate constant for the reaction:
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 20
What happens If the reaction rate at a given temperature becomes slower?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 21

Assertion (A) Lower is the activation energy faster is the reaction.

Reason (R) If the activation energy of reaction is zero, temperature will have no effect on the rate constant.

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 22
Which of the following is a model of enzyme action?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 6>Q 23
An example of an autocatalytic reaction is?