Chemistry Major portion of the earth’s crust is mainly constituted by Oxygen and Iron Silicon and Iron Oxygen and Silicon Silicon and Aluminium Oxygen and Iron Silicon and Iron Oxygen and Silicon Silicon and Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The product, 9-nitroanthracene is obtained from anthracene by the action of Nitric acid in excess Nitric acid and acetic anhydride Nitric acid and ethyl alcohol Nitric acid and acetic acid Nitric acid in excess Nitric acid and acetic anhydride Nitric acid and ethyl alcohol Nitric acid and acetic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? NO2 Photochemical smog Dust particles SO2 NO2 Photochemical smog Dust particles SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Zinc sulphide is commonly used as Rodenticide Deodorant Fungicide Herbicide Rodenticide Deodorant Fungicide Herbicide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Williamson's synthesis is widely used in the laboratory preparation of Esters Ethers Alcohols Aldehydes Esters Ethers Alcohols Aldehydes ANSWER DOWNLOAD EXAMIANS APP
Chemistry Calcium salts used as fertilizer is : Calcium Sulphate Calcium Cyanide Calcium Carbonate Calcium Carbide Calcium Sulphate Calcium Cyanide Calcium Carbonate Calcium Carbide ANSWER DOWNLOAD EXAMIANS APP
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