Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful SO2 in the air Solar ultraviolet radiation Solar infrared radiation CO2 in the air SO2 in the air Solar ultraviolet radiation Solar infrared radiation CO2 in the air ANSWER DOWNLOAD EXAMIANS APP
Chemistry The BOD values of water indicate the Amount of oxygen used for biochemical reduction Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of organic debris Amount of oxygen used for biochemical reduction Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of organic debris ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Radio-waves Ultraviolet Visible Infrared Radio-waves Ultraviolet Visible Infrared ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is usually a mixture of : Calcium aluminate and calcium ferrate Calcium silicate and calcium aluminate Calcium silicate and calcium ferrate Lime stone and silicon dioxide Calcium aluminate and calcium ferrate Calcium silicate and calcium aluminate Calcium silicate and calcium ferrate Lime stone and silicon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The natural source of hydro-carbon is Biomass Coal Carbohydrates Crude oil Biomass Coal Carbohydrates Crude oil ANSWER DOWNLOAD EXAMIANS APP
Chemistry In a Carbonyl group a carbon atom makes double bond with Hydrogen Carbon Oxygen None of these Hydrogen Carbon Oxygen None of these ANSWER DOWNLOAD EXAMIANS APP
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