Question

A thick fog-like layer in the atmosphere, especially during winters it is called:

• A. smoke
• B. smog
• C. dust
• D. none of the above

Answer 1

The correct option is B smog

Smog is a thick fog-like layer in the atmosphere, especially during winters, made up of fog and smoke.

Sulphur dioxide is mainly produced by burning fuels such as coal. It causes respiratory problems, including permanent lung damage.

Hence, the correct option is $\text{B}$