Q. When does plants usually close their stomata ?

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Q. Which aliphatic hydrocarbon does not active in atmospheric photochemical reaction?

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Q. Which source of air pollution has a large stationary source?

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Q. CO reacts with hemoglobin of blood and displaces O₂ to form

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Q. Clogging of stomata reduces intake of

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Q. Biological particles survive in atmosphere for short period of time due to lack of

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Q. When does radiation inversion usually occur ?

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Q. What is threshold limit value of H₂S?

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Q. Which gas provides carbonation in soft drinks and beverages?

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Q. Natural ozone in 'stratosphere' absorbs harmful

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Q. Which gas helps in raising equilibrium temperature of earth?

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Q. What is atmospheric life of CO?

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Q. Exposure to H₂S for a short period, causes

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Q. 'Methane' is a naturally accruing

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Q. Major 'reservoirs' of CO₂ are:

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Q. Temperature gradient of 'ambient' air is known as

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Q. When temperature changes a hot parcel of air against altitude, providing heat transfer across boundary, resulting condition is known as

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Q. 'TLV' stands for

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Q. Narrow valleys are favorable to inversion because horizontal air movement is

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Q. How much an average man breathe per day?

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