Chemistry Threshold limit value of copper in the atmospheric air is 0.01 mg/m3 0.001 mg/m3 1.0 mg/m3 5.0 mg/m3 0.01 mg/m3 0.001 mg/m3 1.0 mg/m3 5.0 mg/m3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Among the following, which is always found in free-state in nature? Silver Gold Copper Sodium Silver Gold Copper Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following caused radioactive pollution along the coast of Kerala ? Zinc Thorium Plutonium Radium Zinc Thorium Plutonium Radium ANSWER DOWNLOAD EXAMIANS APP
Chemistry If water smells bad, then that odour can be removed by adding Alum Bleach Deactivated nitrogen Activated carbon Alum Bleach Deactivated nitrogen Activated carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gold dissolves in Nitric acid Acetic acid Aqua-regia Hydrochloric acid Nitric acid Acetic acid Aqua-regia Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. hydrochloric acid and conc. nitric acid Conc. nitric acid and conc. sulphuric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. hydrochloric acid and conc. nitric acid Conc. nitric acid and conc. sulphuric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
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