Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is oxygen methane helium ozone oxygen methane helium ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atmospheric gas that is mainly responsible for Green House effect : Ozone Nitrogen Carbondioxide Oxygen Ozone Nitrogen Carbondioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Mica Coal Natural Gas Petroleum Mica Coal Natural Gas Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry Curd is sour due to presenceof Acetic acid Oxalic acid Lactic acid Tartaric acid Acetic acid Oxalic acid Lactic acid Tartaric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The green colour seen in firework displays is due to the chloride salt of : Sodium Strontium Barium Calcium Sodium Strontium Barium Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ? Sodium chloride Hydrogen peroxide Saltpetre Borax Sodium chloride Hydrogen peroxide Saltpetre Borax ANSWER DOWNLOAD EXAMIANS APP
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