Chemistry The natural source of hydro-carbon is Carbohydrates Crude oil Coal Biomass Carbohydrates Crude oil Coal Biomass ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Carbon monoxide Methane Sulphur dioxide Carbon dioxide Carbon monoxide Methane Sulphur dioxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Photochemical smog SO2 NO2 Dust particles Photochemical smog SO2 NO2 Dust particles ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Nitrogen Helium Carbon dioxide Sulphur dioxide Nitrogen Helium Carbon dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas does not form the part of atmosphere ? None of these Nitrogen Helium Chlorine None of these Nitrogen Helium Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass is made of Copper and tin Copper, tin and zinc Tin and lead Copper and zinc Copper and tin Copper, tin and zinc Tin and lead Copper and zinc ANSWER DOWNLOAD EXAMIANS APP
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