The following is true about ozone?
( A ) It is essential for respiration of animals and plants.
( B ) It absorbs ultraviolet rays.
( C ) Its percentage in air is almost 3 %.
( D ) It is used to disinfect water.
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Q:
The following is true about ozone?
( A ) It is essential for respiration of animals and plants.
( B ) It absorbs ultraviolet rays.
( C ) Its percentage in air is almost 3 %.
( D ) It is used to disinfect water.
- 1A , B and Cfalse
- 2B and Dtrue
- 3Only Bfalse
- 4A and Dfalse
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