Chemistry Which one of the following is extensively used for sterilizing water ? Borax powder Bleaching powder Soda powder Alum Borax powder Bleaching powder Soda powder Alum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The two metal ions that cause hardness to water are: Calcium, Magnesium Sodium, Magnesium Sodium, Calcium Sodium, Potassium Calcium, Magnesium Sodium, Magnesium Sodium, Calcium Sodium, Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rock salt is a mineral containing Iron Magnesium Sodium Potassium Iron Magnesium Sodium Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ‘Green House effect’ is produced due to the presence of excess amount of Sulphur dioxide Methane Nitrogen dioxide Carbon monoxide Sulphur dioxide Methane Nitrogen dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Smelting Slugging Leaching Zone melting Smelting Slugging Leaching Zone melting ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by 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 The action of ultraviolet rays on oxygen ANSWER DOWNLOAD EXAMIANS APP
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