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 helium oxygen ozone methane helium oxygen ozone methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals can displace copper from copper sulphate solution ? Iron Platinum Mercury Gold Iron Platinum Mercury Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electric iron has a heating element made of : Zinc Tungsten Nichrome Copper Zinc Tungsten Nichrome Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Removal of carbon particles from air involves the principle of Filteration Precipitation Sedimentation Electrophoresis Filteration Precipitation Sedimentation Electrophoresis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vulcanized rubber contains sulphur 10-15% 7-9% 0.02 3-5% 10-15% 7-9% 0.02 3-5% ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the most common salt in sea water ? Potassium chloride Magnesium sulphate Sodium chloride Calcium carbonate Potassium chloride Magnesium sulphate Sodium chloride Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
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