Chemistry The depletion in Ozone layer is caused by ________ . Chlorofluorocarbons Nitrous oxide Methane Carbon dioxide Chlorofluorocarbons Nitrous oxide Methane Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the human body is Oxygen Carbon Nitrogen Iron Oxygen Carbon Nitrogen Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is used in photography ? Aluminium hydroxide Sodium chloride Potassium nitrate Silver bromide Aluminium hydroxide Sodium chloride Potassium nitrate Silver bromide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Soap is prepared by boiling caustic soda with Fats Glycerine Alcohol Kerosene oil Fats Glycerine Alcohol Kerosene oil ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 19 36 53 17 19 36 53 17 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : None of the options Substitution reaction Addition reaction Elimination reaction None of the options Substitution reaction Addition reaction Elimination reaction ANSWER DOWNLOAD EXAMIANS APP
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