The most plentiful gas in the air is:

Correct! Wrong!

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The most plentiful gas in the air is nitrogen (78 per cent).

When water evaporates, it becomes:

Correct! Wrong!

When water evaporates, it becomes vapour.

Our earth is surrounded by a huge blanket of air called the:

Correct! Wrong!

Our earth is surrounded by a huge blanket of air called the atmosphere.

On a humid day, clothes take ____ to dry.

Correct! Wrong!

On a humid day, clothes take longer to dry.

The hour-to-hour, day-to-day condition of the atmosphere is called:

Correct! Wrong!

The hour-to-hour, day-to-day condition of the atmosphere is called weather.

Air pollution is not caused by ____.

Correct! Wrong!

Air pollution is not caused by hydro-electric power plants.

In the cycle of energy and nutrient flow in the ecosystem, the nutrient flow ____.

Correct! Wrong!

In the cycle of energy and nutrient flow in the ecosystem, the nutrient flow is cyclic.

What is the percentage of nitrogen in the atmosphere?

Correct! Wrong!

Nitrogen accounts for 78 per cent of the atmosphere.

When water vapour rises, it starts:

Correct! Wrong!

When water vapour rises, it starts cooling.

Near which Indian territory is the Gulf of Thailand located?

Correct! Wrong!

The Gulf of Thailand is near the Andaman and Nicobar Islands, i.e. it is towards the east of Port Blair.

Moisture in the air is called:

Correct! Wrong!

Moisture in the air is called humidity.

A super cyclone occurred in Orissa in:

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A super cyclone struck Orissa on 29th October in 1999.

Which of the following occurs among the biotic components in an ecosystem?

Correct! Wrong!

Flow of energy and cycling of the materials are major attributes of the biotic component of the ecosystems.

The ionosphere is a part of the:

Correct! Wrong!

The ionosphere is a part of the thermosphere.

The third layer of the atmosphere from the ground is called the:

Correct! Wrong!

The third layer of the atmosphere from the ground is called the mesosphere.

Which of the following areas is more prone to cyclones originating in the Bay of Bengal?

Correct! Wrong!

Orrissa is more prone to cyclones originating in the Bay of Bengal.

The direction of wind is detected with the help of a:

Correct! Wrong!

A wind vane shows the direction of wind.

Temperature is measured with the help of a ____.

Correct! Wrong!

A thermometer measures temperature.

Microbial conversion of ammonia to nitrate is termed as ____.

Correct! Wrong!

Microbial conversion of ammonia to nitrate is termed as Nitrification and is carried out by nitrifying bacteria like Nitrosomonas and Nitrobacter.

Which of the following is a greenhouse gas?

Correct! Wrong!

Carbon dioxide is a greenhouse gas.

Elemental form of carbon available on earth is ____.

Correct! Wrong!

Carbon is found in various forms on the Earth. It occurs in the elemental form as diamonds and graphite.

____ accounts for 0.03 per cent of the atmosphere.

Correct! Wrong!

Carbon dioxide accounts for 0.03 per cent of the atmosphere.

A barometer measures:

Correct! Wrong!

A barometer measures atmospheric pressure.

The tip of Mount Everest reaches the:

Correct! Wrong!

The tip of Mount Everest is in the troposhere.

Aeroplanes fly in the:

Correct! Wrong!

Aeroplanes fly in the stratosphere.

ICSE Class 9th Geography 4 - The Atmosphere MCQs
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