Natural Resources

Q.

Which gas is used in fire extinguishers to extinguish the fire?

Q.

The burning of fossil fuels such as ________, _________ and _________ releases carbon dioxide into the atmosphere.

Q.

________ is defined as sum total of all conditions and influences that affect the life of organisms.

Q.

Justify: “The combustion of fossil fuels increases the number of suspended particles in the air”.

Q.

Which of the following gases are used as fire extinguisher?

1. Oxygen

2. Carbon dioxide

3. Nitrogen

4. Helium

Q. Write a brief note on acid rain.

Q.

Smog is the air pollutant which

1. Causes leukemia

2. Causes asthma

3. Reduces visibility

4. Causes indigestion

Q. Which of the following gases can be used as a preservative?

1. Oxygen
2. Carbon dioxide
3. Nitrogen
4. Water vapour

Q.

_________ (rain/seawater) is one form of precipitation.

Q.

28. Replace the following with a word or a phrase.

d. the coming down of water in the form of rain, hail, and snow

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What are the characteristics of natural gas?

Q. Can materials exist in all the three states?

Q. Which of the following are obtained from ocean?

1. Food
2. Fresh air
3. Minerals
4. Fuel

Q.

Naphthalene ball is used widely as an insect repellent. It is a product of-

1. Petroleum
2. Coal gas

3. Coal tar

4. Ammonia

Q. When it rains, the car's windshield gets blurred. It is due to the ______ phenomenon.

1. condensation
2. solidification
3. evaporation
4. freezing

Q.

Air, water and soil are the examples of

1. Biotic component

2. Abiotic component

3. Cultural component

4. None of them

Q.

Name the three abiotic factors in the environment.