Chemistry Of the following, which one pollutes the air of a big city ? Lead Chromium Cadmium Copper Lead Chromium Cadmium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Coal fire Steam engine Burning coal Burning garbage Coal fire Steam engine Burning coal Burning garbage ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Calcination Roasting Smelting Refining Calcination Roasting Smelting Refining ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process which does not evolve CO2 in air is Burning Breathing Organic delay Photosynthesis Burning Breathing Organic delay Photosynthesis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used as a catalyst in the production of high octane fuels? H2SO4 HCl HF HNO3 H2SO4 HCl HF HNO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metals commonly used for electroplating are Gold, Sodium and Chromium Nickel, Lead and Chromium Chromium, Copper and Nickel Gold, Sodium and Potassium Gold, Sodium and Chromium Nickel, Lead and Chromium Chromium, Copper and Nickel Gold, Sodium and Potassium ANSWER DOWNLOAD EXAMIANS APP
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