Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 19 36 17 53 19 36 17 53 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When quick lime is added to water Heat is absorbed Heat is liberated No heat change takes place Temperature decreases Heat is absorbed Heat is liberated No heat change takes place Temperature decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal that is used as a catalyst in the hydrogenation of oils is Cu Ni Pt Pb Cu Ni Pt Pb ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the chemical symbol of mercury None of these Hg Mr Mg None of these Hg Mr Mg ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Sulphur dioxide Carbon dioxide Nitrous oxide Hydrocarbons Sulphur dioxide Carbon dioxide Nitrous oxide Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Nitrous oxide Chlorofluorocarbons Carbon dioxide Sulphur dioxide Nitrous oxide Chlorofluorocarbons Carbon dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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