Q. Natural O₃ is present in

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Q. Conning occurs in neutral atmosphere, when wind velocity is greater than

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Q. Some bacteria form a spores in atmosphere live for

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Q. Spray are formed by atomization of parent liquids such as:

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Q. Oxides of nitrogen are second most abundant

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Q. When ELR is less than ALR, resulting environmental lapse rate is known as

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Q. Emission of CO and NO₂ are responsible for higher concentration of O₃ in the

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Q. Which particles are larger and heavier?

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Q. Fume are formed from condensation of

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Q. What is natural sources of CO?

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Q. Which air pollutant is responsible for corrosion?

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Q. What is concentration of nitric oxide in air?

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Q. 'Trichlorethylene' is less reactive than

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Q. What does smog affect ?

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Q. Which gas has a rotten egg odor?

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Q. Rate of temperature changes in atmosphere is known as:

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Q. In which atmospheric self cleansing process, large particles act as a receptor for smaller ones to form a unit?

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Q. Estimated annual emission of CO on global scale is

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Q. Which gas has adverse effects on human health ?

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Q. Which type of plume has a wavy shape and occurs in a highly unstable atmosphere?

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