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 methane helium oxygen ozone methane helium oxygen ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used to galvanise iron to protect it from rusting is Antimony Lead Zinc Chromium Antimony Lead Zinc Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of Nitrogen in Air is 78.03 0.03 85.02 0.94 78.03 0.03 85.02 0.94 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stainless steel is usually made by alloying the steel with Chromium and nickel Manganese and copper Copper and chromium Copper and nickel Chromium and nickel Manganese and copper Copper and chromium Copper and nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Piped Natural Gas (PNG) is used for Mining Welding Anaesthesia Cooking Mining Welding Anaesthesia Cooking ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the human body is Oxygen Iron Carbon Nitrogen Oxygen Iron Carbon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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