Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Nitrous oxide Sulphur dioxide Chlorofluorocarbons Carbon dioxide Nitrous oxide Sulphur dioxide Chlorofluorocarbons Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide bleaches colouring matter by : Reduction Dehydration Oxidation Decomposition Reduction Dehydration Oxidation Decomposition ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Oxidation Electrolysis Zone refining Roasting Oxidation Electrolysis Zone refining Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry What material is used to make electric heater coil ? Iron Silver Nichrome Copper Iron Silver Nichrome Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of quartz is Sodium silicate Calcium oxide Sodium phosphate Calcium phosphate Sodium silicate Calcium oxide Sodium phosphate Calcium phosphate ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS