Atmosphere

Q. Which are the two main gases in our atmosphere?

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

Q. Atmosphere extends upto a height of _____km above the Earth’s surface.

1. 15, 000
2. 20, 000
3. 5, 000
4. 10, 000

Q. What is the composition of gases in the atmosphere?

1. Oxygen 78%, Nitrogen 21% and Other gases 1%
2. Nitrogen 77%, Oxygen 22% and Other gases 1%
3. Nitrogen 67%, Oxygen 33% and Other gases 1%
4. Nitrogen 78%, Oxygen 21% and Other gases 1%

Q.

Define the term atmosphere.

Q. What is atmosphere?

1. A blanket of oxygen that exists around the Earth.
2. A blanket of carbon dioxide that exists around the Earth.
3. A blanket of gases that exist in the Earth.
4. A blanket of air that exists around the Earth.

Q. Choose the correct statement(s) from the following.

1. Water vapour is a greenhouse gas.
2. Gravitational force is not directly responsible for the concentration of atmosphere near the Earth's surface.
3. The abundant nitrogen in the atmosphere can be directly absorbed by the plants and animals.
4. The atmosphere consists of gases of uniform quality and quantity.

Q.

The concentration of which gas is highest in our environment? (1) Oxygen (2) Hydrogen (3) Nitrogen (4) Carbon dioxide.

Q.

The composition of Oxygen, Argon and Nitrogen in the atmosphere is in the ratio of –

1. 21%, 0.9% and 78% respectively

2. 0.9%, 21% and 78% respectively

3. None of the options

4. 21%, 78% and 0.9% respectively

Q.

Which gas in the atmosphere has the property of absorbing the reflected heat?

Q. Which gas is released by green plants during photosynthesis?

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

Q.

Atmosphere consists of

1. air above land mass

2. air above oceans

3. air around us

4. envelope of air around the earth.

Q.

The blanket of air surrounding the earth is called _________________

Q.

82 Atmosphere is essential for life on the earth.

1. True
2. False

Q. Which are the two main gases in our atmosphere?

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

Q.

The blanket of air that surrounds the earth is called ___________.

Q.

State a reason why there is a balance in the amount of carbon dioxide in the air, even though carbon dioxide is released into the atmosphere by various processes.

Q.

41. Which of the following statements is incorrect?

1. Burning of dry leaves causes air pollution

2. Oxygen helps in burning

3. We breathe in carbon dioxide

4. Noble gases are present in the air

Q. The gas given out in photosynthesis is
(a) nitrogen.
(b) carbon dioxide.
(c) oxygen.
(d) hydrogen.

Q. Match the following names of the gases with their respective share of presence in the atmosphere.

1. 78%
2. 21%
3. 0.93%
4. 0.033%

Q.

____________ is the blanket of air that surrounds the earth.

Q.

What is meant by the term ‘atmosphere’. State the role played by the atmosphere for the survival of mankind.

Q. Define atmosphere