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प्रश्न
The two forms of oxygen found in the atmosphere are
विकल्प
water and ozone
water and oxygen
ozone and oxygen
water and carbon-dioxide
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उत्तर
ozone and oxygen
Explanation:
Oxygen is found in the atmosphere in two forms, as diatomic molecule (O2) and as triatomic ozone (O3). Normally elemental oxygen is found in the form of a diatomic molecule in the atmosphere. Ozone is not stable near the earth’s surface and is present 18¬50 km above in the atmosphere (stratosphere) as a thick blanket called ozonosphere or ozone shield.
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संबंधित प्रश्न
We often leave the lights switched on and fans running when we are not in the room. We switch on the air-conditioning even though we don’t really need it. We insist on being dropped to school in the car every day. Thus, we waste valuable energy which is generally produced by burning coal and petroleum. As you know, the burning of these fuels release gases that pollute the atmosphere.
Make a list of the similar things that we do without realizing that we are destroying the environment. Think of the ways that we can behave differently.
State whether the following is true or false.
The temperature drops at the rate of 1°C per 185 metres in the atmosphere.
In your notebooks, draw a diagram showing the layers of the atmosphere. Mark clearly the ozone layer, the height at which a jet plane can fly and also the height up to which birds can fly.
State whether the following sentence is true (T) or false (F).
The atmosphere is composed mainly of nitrogen and oxygen.
Short Answer Type Question:
Give an account of the composition of the atmosphere. Also, discuss the importance of the components.
All weather changes occur in the Troposphere.
__________ is the great circle at the centre of the earth.
Large jet planes normally fly here ______.
This is the earth’s magnetic belt ______.
Atmospheric layer important for human beings is ______.
