Question

A. Choose the correct answer.
1. The ozone layer is found in
(a) troposphere (b) stratosphere
2. The component of air which cannot be used directly by the living beings
(c) mesosphere (d) exosphere
(a) oxygen (b) nitrogen
(c) carbon dioxide (d) water vapour
3. Diseases like asthma, bronchitis etc. are caused due to
(a) polluted water
(b) polluted air
(c) deficiency of minerals
(d) lack of food
4. Things like syringe, dropper, drinking straw etc. work on the principle of
(a) water pressure
(b) air pressure
(c) pressure of container
(d) partial pressure
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Answer 1

Answer:

stratosphere,nitrogen,polluted air, air pressure