Chemistry In arc welding, Argon is used because of its High flammability Low reactivity with metal Ability to lower the melting point of the metal High calorific value High flammability Low reactivity with metal Ability to lower the melting point of the metal High calorific value ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most common cause of pollution of air is Carbon dioxide Sulphur dioxide Carbon monoxide Smoke Carbon dioxide Sulphur dioxide Carbon monoxide Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is NO N2O3 NO2 N2O NO N2O3 NO2 N2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of total hardness in drinking water is 200 500 100 50 200 500 100 50 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not an addition polymer Polythene PVC Polystyrene Nylon Polythene PVC Polystyrene Nylon ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Oxygen Silicon Magnesium Iron Oxygen Silicon Magnesium Iron ANSWER DOWNLOAD EXAMIANS APP
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