Chemistry Which of the following is a metallic ore ? Feldspar Galena Mica Quartz Feldspar Galena Mica Quartz ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Nitrous oxide Hydrocarbons Sulphur dioxide Carbon dioxide Nitrous oxide Hydrocarbons Sulphur dioxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Refining Roasting Smelting Calcination Refining Roasting Smelting Calcination ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source of naphthalene is Diesel Coal-tar Charcoal Camphor Diesel Coal-tar Charcoal Camphor ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is obtained from sea weeds ? Iodine Argon Vanadium Sulphur Iodine Argon Vanadium Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Curd is sour due to presenceof Lactic acid Oxalic acid Tartaric acid Acetic acid Lactic acid Oxalic acid Tartaric acid Acetic acid ANSWER DOWNLOAD EXAMIANS APP
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