Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Carbon monoxide Water vapour Carbon dioxide Ozone Carbon monoxide Water vapour Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Nickel and cadmium Zinc and carbon Lead peroxide and lead Iron and cadmium Nickel and cadmium Zinc and carbon Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is a carbohydrate ? Cane-sugar Turpentine Nylon Hydrogen peroxide Cane-sugar Turpentine Nylon Hydrogen peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamonds are glittering and attractive because light incident on them undergoes Highest refraction Multiple internal reflections Hundred percent transmission Multiple surface reflections Highest refraction Multiple internal reflections Hundred percent transmission Multiple surface reflections ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of6.023 × 1020 atoms present in one mole of a gas at STP is '6.023 × 10–20 6.023 × 1020 6.023 × 1023 '6.023 × 10–23 '6.023 × 10–20 6.023 × 1020 6.023 × 1023 '6.023 × 10–23 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Petroleum is a mixture of Salts Elements Polymers Hydrocarbons Salts Elements Polymers Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
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