Decibel (dB):
· Noise pollution is measured in decibels (dB), which is a logarithmic unit used to measure the intensity of sound.
· The decibel scale quantifies sound pressure levels relative to a reference value, typically the threshold of hearing for the average human ear.
· Higher decibel levels correspond to louder sounds, and exposure to high decibel levels over time can lead to hearing damage and contribute to noise pollution.
Given below are two statements. One of them is labelled as Assertion (A} and the other as Reason (R}. Choose the correct answer with the help of code given below :
Assertion (A} : Never sleep in a room with burning or smouldering coal fire in it. Reason (R} : Incomplete combustion leads to production of Carbon Monoxide gas, which may lead to death of people sleeping in the room.
Smoke goes up because:
Damaged fluorescent tubes or CFLs need to be disposed off safely because:
Mohan went to a cafe and ordered a soft drink. The waiter brought his order in a plastic glass with a plastic straw. Mohan, being environment friendly, is not happy as:
