● Nitrogen oxides are produced mainly by automobiles, aircraft thermal power stations and factories. High concentration of nitrogen oxides causes several diseases.
● Chlorofluorocarbons are emitted from industries spray cans air conditioners refrigerators etc. higher concentration of CFC is is one of the most dangerous forms of air pollution and causes ozone depletion
● Hydrocarbons are primary air pollutants which cause damage to the biological system.
English
150 Questions
150 Marks
150 Mins English English150 Questions150 Marks150 Mins English English150 Questions150 Marks150 Mins EnglishGiven 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:
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