In metro cities, which of the following is the major cause of atmospheric Pollution?

(1) Automobiles

(2) Population

(3) Industries

(4) All of these

(1) Proper maintenance of automobile

(2) Use of lead free petrol or diesel

(3) Catalytic Converters

(4) Scrubber

(1) Platinum

(2) Palladium

(3) Rhodium

(4) Molybdenum

(1) Unburnt Hydrocarbons are converted into carbon dioxide and water

(2) CO is converted into Carbon dioxide

(3) Nitric acid is converted into Nitrogen G gas

(4) All of these

(1) Leaded petrol as it activates the catalyst

(2) Unleaded petrol activates the catalyst

(3) Leaded petrol as it inactivates the catalyst

(4) Unleaded petrol as lead inactivates the catalyst

(1) 1981, 1986

(2) 1986, 1987

(3) 1981, 1987

(4) 1976, 1986

(1) A sound of 200 dB or more

(2) A sound of 80 dB or more

(3) A sound of 150 dB or more

(4) A sound of 60 dB or more

(1) Sleeplessness

(2) Increased heartbeat, Altered breathing pattern

(3) Nausea, change in vision

(4) Stress

(1) Use of sound absorbent material

(2) Delimitation of horn free zones around hospitals and schools

(3) Permissible sound levels of crackers and timing of loud speakers

(4) All of these

(1) Delhi leads the country in its level of air pollution

(2) Delhi has more cars than the states of Gujrat and West Bengal put together

(3) In 1990s, Delhi ranked fourth among the 41 most polluted cities of the world

(4) PIL was filed in High court against the Air pollution in Delhi