Question: Inhalation of silica dust by human being causes [A]. asphyxiation [B]. shortness of breath [C]. tuberculosis [D]. both(b) & (c) Answer: Option D Explanation: No answer description available for this question.

Question: Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. [A]. 35 [B]. 75 [C]. 95 [D]. 105 Answer: Option B Explanation: No answer description available for this question.

Question: Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is [A]. inversely proportional to viscosity of gas. [B].…

Question: Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the [A]. forestation [B]. rain [C]. green house effect [D]. vegetation Answer: Option C Explanation: No answer description available for this…

Question: Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for [A]. conversion of CO into CO2 in the second compartment. [B]. conversion of NOx into N2 and NH3 in the first compartment. [C]. oxidation of…

Question: Workers working in __________ industry are most prone to white lung cancer. [A]. coal mining [B]. limestone mining [C]. textile [D]. asbestos Answer: Option C Explanation: No answer description available for this question.

Question: Inorganic impurities causing water pollution is [A]. fats [B]. carbohydrates [C]. salts of metals [D]. protein Answer: Option C Explanation: No answer description available for this question.

Question: The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). [A]. 20 [B]. 230 [C]. 750 [D]. 1500 Answer: Option B Explanation: No answer description available for this question.

Question: Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as [A]. photochemical smog. [B]. peroxy acetyl nitrate (PAN) or methyl nitrile. [C]. benzopyrene. [D]. poly acrylonitrile Answer: Option B Explanation: No…

Question: In large thermal power stations very fine particulates present in flue gas are removed by [A]. wet scrubber [B]. bag filter [C]. electrostatic precipitators [D]. dust catcher Answer: Option C Explanation: No answer description available for this question.