Chemistry Which gas is most stable at room temperature H2 F2 O2 N2 H2 F2 O2 N2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Firewood Natural Gas Petroleum Coal Firewood Natural Gas Petroleum Coal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the atmosphere is mainly caused by Sulphur dioxide Hydrogen sulphide Nitrogen dioxide Chlorofluorocarbon Sulphur dioxide Hydrogen sulphide Nitrogen dioxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the earth’s atmosphere is Argon Oxygen Nitrogen Krypton Argon Oxygen Nitrogen Krypton ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals occurs in free state ? Zinc Iron Lead Copper Zinc Iron Lead Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element required for solar energy conversion ? Tantalum Beryllium Silicon Ultra pure carbon Tantalum Beryllium Silicon Ultra pure carbon ANSWER DOWNLOAD EXAMIANS APP