Chemistry In upper layer of atmosphere ozone is formed by The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Oxides of nitrogen Carbon dioxide Carbon monoxide Oxides of sulphur Oxides of nitrogen Carbon dioxide Carbon monoxide Oxides of sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first organic compound synthesised in the laboratory was Urea Uric acid Lactic acid Glucose Urea Uric acid Lactic acid Glucose ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? Methyl red Methylene blue Methyl orange Phenolphthaline Methyl red Methylene blue Methyl orange Phenolphthaline ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver gets corroded due to ________ in air. Hydrogen Sulphide Nitrogen Oxygen Carbon dioxide Hydrogen Sulphide Nitrogen Oxygen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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