Related Questions

Complete the following sentence by using the most "appropriate word" given below: Decibel is the ____ of measuring sound "
A unit
B scale
C balance
D way
The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel.
A 1
B 5
C 10
D 20
Choose the word that best completes the sentence : Noise pollution generally receives less attention than ----- air pollution.
A does
B it does
C over
D it does over
Air pollution caused by industrial fumes "has" been studied for years, "but " only recently "has" the harmful effects of noise pollution "become" known.
A 1
B 2
C 3
D 4
Noise pollution generally receives less attention than------ air pollution.
A does
B it does
C over
D it does over
"We discussed the hazardous journey ahead of us" Here 'hazardous' means:
A enjoyable
B approaching
C dangerous
D comfortable
Noise pollution level in a chemical plant is expressed in
A Roentgen
B Decibel
C Hertz
D None of these
The hazardous metallic pollution in the air of Dhaka city is----.
A Arsenic
B Carbon
C Zinc
D Led
Decibel is unit of -
A Sound
B Light
C Heat
D Electricity
Decibel is a unit of ____
A light
B sound
C heat
D electricity

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