Chemistry Black lung disease occurs in people working in Coal mines Electroplating industry Organic solvents industry Paint manufacturing industry Coal mines Electroplating industry Organic solvents industry Paint manufacturing industry ANSWER DOWNLOAD EXAMIANS APP
Chemistry An acid having basicity one is Disodium hydrogen phosphate Sodium phosphate Phosphoric acid Sodium dihydrogen phosphate Disodium hydrogen phosphate Sodium phosphate Phosphoric acid Sodium dihydrogen phosphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbon Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element by number in the living system is : Nitrogen Hydrogen Oxygen Carbon Nitrogen Hydrogen Oxygen Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? None of these Solder Aluminium powder Aluminium sulphate None of these Solder Aluminium powder Aluminium sulphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of total hardness in drinking water is 200 500 50 100 200 500 50 100 ANSWER DOWNLOAD EXAMIANS APP
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