Chemistry Which of the following is secondary air pollutant ? Photochemical smog Dust particles SO2 NO2 Photochemical smog Dust particles SO2 NO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Sodium peroxide Hydrogen peroxide Barium peroxide Ozone Sodium peroxide Hydrogen peroxide Barium peroxide Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following alloy is used in making magnet ? Duralumin Alnico Magnalium Stainless steel Duralumin Alnico Magnalium Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rusting of iron takes place due to Oxidation Exfoliation Carbonation Corrosion Oxidation Exfoliation Carbonation Corrosion ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is used as fire extinguisher ? Carbon dioxide Carbon monoxide Sulphur dioxide Carbon suboxide Carbon dioxide Carbon monoxide Sulphur dioxide Carbon suboxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant constituent of atmospheric air is : Hydrogen Carbon Nitrogen Oxygen Hydrogen Carbon Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
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