Chemistry Ultra purification of a metal is done by : Zone melting Leaching Smelting Slugging Zone melting Leaching Smelting Slugging ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following acids serves as an electrolyte in a lead storage battery? Lactic acid Hydrochloric acid Sulphuric acid Nitric acid Lactic acid Hydrochloric acid Sulphuric acid Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? Water, being heavy, slips below petrol which thus remains in contact with air and burns The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low Petrol is too inflammable to be extinguished by water Water, being heavy, slips below petrol which thus remains in contact with air and burns The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low Petrol is too inflammable to be extinguished by water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Threshold limit value of copper in the atmospheric air is 0.01 mg/m3 5.0 mg/m3 0.001 mg/m3 1.0 mg/m3 0.01 mg/m3 5.0 mg/m3 0.001 mg/m3 1.0 mg/m3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Dye laser Semiconductor laser Excimer laser Gas laser Dye laser Semiconductor laser Excimer laser Gas laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid which fails to liberate carbon dioxide from sodium bicarbonate is : Sulphuric acid Carbonic acid Acetic acid Formic acid Sulphuric acid Carbonic acid Acetic acid Formic acid ANSWER DOWNLOAD EXAMIANS APP
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