Atmosphere and Its Composition

Q.

Discuss the importance of atmosphere.

Q. The atmosphere extends upto _____ km above the surface of the Earth.

1. 1, 600
2. 1, 900
3. 1, 800
4. 1, 700

Q. What is the percentage of nitrogen in the atmosphere?

1. 21%
2. 78%
3. 1%
4. 50%

Q.

1. About three-fourths of the air consists of ……………..

Q. How has the atmosphere made the conditions on the Earth favourable for the existence of life?

1. The atmosphere lets the harmful rays of the sun in.
2. It protects us from the harmful effects of the sun's rays.
3. It provides us with the air that we breathe.
4. It doesn't let the air to come in effectively killing other biological elements.

Q.

Which of the following components of air is present in the largest amount in the atmosphere?

1. Nitrogen

2. Oxygen

3. Water vapour

4. Carbon dioxide

Q. Select the correct statement regarding gases present in the atmosphere.

1. Humans inhale only oxygen.
2. Argon is the most abundant gas present in the atmosphere.
3. During photosynthesis, oxygen is released.
4. Nitrogen present in the atmosphere is directly used by plants.

Q.

What are the main components of air ? Also, write down the composition of air by volume.

Q. Which of the following phrases describe what gases are present and how much of each gas is present?

1. Segregation of the atmosphere
2. Compilation of the atmosphere
3. Composition of the atmosphere
4. Stratification of the atmosphere

Q.

1 All living organisms require what to survive?

Q. The amount of water vapour present in air is called ______.

1. aridity
2. defeciency
3. humidity
4. paucity

Q. What is the Greenhouse effect and What are greenhouse gasses? Name some of the greenhouse gasses in the atmosphere.

Q. Which of the following gases correspond to 21% in the Composition of Atmosphere?

1. Nitrogen
2. Carbon dioxide
3. Argon
4. Oxygen

Q. Which of the following gases correspond to 21% in the Composition of Atmosphere?

1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Argon

Q.

Oxygen occurs in nature in both free and combined states.

1. True
2. False

Q. The huge mass of air that surrounds the Earth is called the Atmosphere.

1. True
2. False

Q. The air that we breathe is a mixture of different _____ .

1. solids
2. liquids
3. aerosol
4. gases

Q. The phenomenon of trapping the Sun's heat by gases in the Earth's atmosphere is called the greenhouse effect.

1. False
2. True

Q. The blanket of air that surrounds the Earth is called ________.

1. Biosphere
2. Hydrosphere
3. Lithosphere
4. Atmosphere