Catalytic converter does

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

(2) CO is converted into Carbon dioxide

(3) Nitric oxide is converted into Nitrogen 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) 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

(1) Before the orders of Supreme court

(2) By the end of 2002

(3) In 1990

(4) Under the act of environment in 1987

(1) It burns more efficiently

(2) Is left unburnt in very little amount

(3) Cheaper

(4) All of these

(1) Difficulty in laying down pipelines for the distribution of CNG

(2) Difficulty in ensuring uninterrupted supply

(3) Can be siphoned off by thieves

(4) Both A and B

(1) Phasing out of old vehicle

(2) Use of unleaded petrol

(3) Use of low sulphur petrol and diesel

(4) Use of electrostatic precipitator in Vehicles