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प्रश्न
What is an ozone layer. State the distribution of the ozone layer in the stratosphere.
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उत्तर
Ozone layer: “Is a layer in the earth’s atmosphere which contains relatively high concentration of ozone [O3].” Ozone layer is distributed 20-30 kms above the earth in stratosphere.
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संबंधित प्रश्न
Write the full name of CFC.
Fill in the following blank with suitable word :
Ultraviolet rays can cause skin..............
The excessive exposure of humans to ultraviolet rays results in:
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
The gas A is used by most of the animals to obtain energy from food by the process of respiration. When A is acted upon by radiation X, it gets converted into another gas B which is an allotrope of A but poisonous when inhaled. B forms a kind of layer C in the upper atmosphere which absorbs radiations X coming from a source Y and prevent them from reaching the earth. Some chemicals Z released from the various devices on the earth are destroying the layer C slowly. In fact, a hole has already been formed in layer C over the area D of the earth.
(a) What are gases (i) A, and (ii) B? Write their molecular formulae.
(b) Name the layer C.
(c) What are (i) X, (ii) Y, and (iii) Z?
(d) Name the area D.
(e) Name any two human ailments which may be caused by X.
Which compounds are responsible for the depletion of ozone layer?
Why is ozone layer called ozone umbrella/shield?
Discuss in detail the process of ozone depletion.
Very short answer type question
Where was the ozone hole discovered?
Which of the following may be a conclusion of the excessive exposure of humans to sun’s ultraviolet rays?
- Peptic ulcers
- Eye disease like cataract
- Damage to lungs
- Skin cancer
Why is ozone layer getting depleted at the higher levels of the atmosphere? Mention one harmful effect caused by its depletion.
