Noise pollution Class 8A

Noise pollution Class 8A

Multiple Choice

What is noise?

• Undesirable sound

• sound more than frequency 20,000

• sound less than frequency 20.

• none

Multiple Choice

noise pollution is caused by

• construction sites

• transportation

• both

• none

Poll

effects of noise pollution

• hearing loss

• Psychological disorders

• Hypertension

• leads heart diseases