Question

The gas which absorbs harmful ultraviolet rays given by the sun.

• A. Oxygen
• B. Ozone
• C. Nitrogen
• D. Hydrogen

Answer 1

The correct option is B

Ozone

The correct option is B.

Explanation of correct answer:

1. The stratosphere contains a thin layer of ozone gas.
2. The ozone layer absorbs most of the harmful ultraviolet rays given by the sun and hence protects us from the damaging effects of harmful ultraviolet rays.

Explanation of incorrect options:

Option A:

Oxygen is necessary for all living organisms for breathing.

Option C:

Nitrogen gas is converted into compounds of nitrogen by microorganisms. These compounds increase soil fertility and help in plant growth.

Option D:

Hydrogen is the most abundant element in the universe. On earth, hydrogen occurs mainly in combination with oxygen and water, as well as in organic matter such as living plants, petroleum, and coal.

Ozone is the gas which absorbs harmful ultraviolet rays given by the sun.