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UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

The entropy of a perfectly crystalline solid at absolute zero is:

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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 7>Q 23
Which statement is correct about the fusion of copper?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 7>Q 24

Assertion (A) When H20 is added to CaO, heat is liberated.

Reason (R) Reaction between CaO and H20 is exothermic.

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 7>Q 25

Consider the following statements

1. An ideal fuel should have high calorific value, low ignition temperature, regulated and controlled.

2. Born-Haber cycle is used to determine lattice energy.

Which of the statement(s) given above is/are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 7>Q 26

Consider the following statements

1. Water and ethanol have unusually large entropies of vaporisation.

2. The compound with negative heat of formation is known as exothermic compound.

Which of the statement(s) given above is/are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 8>Q 1
The life span of a Daniell cell may be increased by
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 8>Q 2
In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 8>Q 3
Sacrificial anode protects iron or ships, underground pipelines etc. from rusting, a process known as cathodic protection. Which one of the following metals cannot be used as a sacrificial anode?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 8>Q 4
The depolariser used is dry cell is