Noise Pollution

What is noise?

• Desirable sound

• Desirable and unwanted sound

• Undesirable and unwanted sound

• Undesirable and wanted sound

In which unit sound is measured?

• Kilometer

• Pascal

• Kilogram

• Decibel

Which pollution cause hearing loss in organisms?

• Air pollution

• Noise pollution

• Water pollution

• Soil pollution

What is the dB of a threshold of hearing?

• 0

• 10

• 50

• 100

What is the dB of a threshold of pain?

• 100

• 110

• 120

• 146

All sound is noise.

• True

• False

At what decibel instantaneous rupture of membrane happens?

• 100

• 120

• 146

• 150

What is the ambient noise level in the residential one during night time?

• 40dB

• 45dB

• 50dB

• 55dB

What is called for a temporary hearing loss?

• Temporary ear pain

• Temporary hearing problem

• Temporary threshold shift

• Temporary hearing shift

What is the permissible noise limit of 120 db?

• 30 minutes

• 2 minutes

• 1 minute

• 30 seconds