EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Consider the following statements

1. When evaporation takes place, cooling takes place.

2. Evaporation takes place at all temperatures, boiling takes place only at the boiling point.

3. Evaporation is a surface phenomenon.

Which of the above is/are true?

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Important Questions on Chemistry

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 4
The gas used in a refrigerator is _____.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 5
Which of the following gases will have the highest rate of diffusion
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 6
Matter around us can exist in three different states, namely, solid, liquid and gas. The correct order of their compressibility is _____.
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 7
The absolute zero, i.e., temperature below which is not achievable, is about _____.
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 8
At very low temperature, oxygen O2, freezes and forms a crystalline solid. Which term best describes the solid?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 9

Statement I: There is high salinity in the Red Sea.

Statement II: The rate of evaporation is high in the Red Sea.

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 10
Dry ice is used for making cold baths in laboratories by mixing with volatile organic solvents. Identify the form of dry ice from the following _____.  
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 1>Q 11

Consider the following statements:

1. Gaseous substances whose critical temperatures are above room temperatures, can be liquefied by applying sufficient pressure to the gas.

2. Gaseous substances whose critical temperatures are below room temperature can be liquefied by the application of pressure and lowering of temperature below T.

Which of the statements given above is/are correct?