Question: Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called [A]. thermosphere [B]. stratosphere [C]. troposphere [D]. mesosphere Answer: Option B Explanation: No answer description available for this question.

Question: World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in [A]. Arizona (U.S.A.) [B]. Chernobyl (undivided U.S.S.R.) [C]. Pensylvania (U.S.A.) [D]. Moscow (U.S.S.R.) Answer: Option B Explanation: No answer description available for this question.

Question: CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. [A]. 102 [B]. 105 [C]. 109 [D].…

Question: __________ can not control the noise pollution. [A]. Use of silencers [B]. Green house gases [C]. Vibration damping [D]. Tree plantation Answer: Option B Explanation: No answer description available for this question.

Question: Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by [A]. chemical coagulation [B]. floatation & skimming [C]. centrifugation [D]. ultrafiltration Answer: Option A Explanation: No answer description available for this question.

Question: Which of the following pollutants, if present in atmosphere is detectable by its odour ? [A]. CO [B]. SO2 [C]. NO2 [D]. CO2 Answer: Option B Explanation: No answer description available for this question.

Question: World environment day is observed every year on the 5th of [A]. June [B]. December [C]. July [D]. September Answer: Option A Explanation: No answer description available for this question.

Question: As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram) [A]. 10 [B]. 90 [C]. 800 [D]. 750 Answer: Option B Explanation: No answer description available for…

Question: A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth’s atmosphere, which absorbs it. [A]. hydrogen [B]. carbon…

Question: Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes [A]. blood poisoning. [B]. anaemia. [C]. nervous system disorder. [D]. all (a), (b) & (c). Answer: Option D Explanation: No answer description available for this question.