Chemistry Among the following the hardest metal is Gold Iron Tungsten Platinum Gold Iron Tungsten Platinum ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Nitrous oxide Carbon dioxide Chlorofluorocarbons Sulphur dioxide Nitrous oxide Carbon dioxide Chlorofluorocarbons Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The source of energy that causes the least global warming is Petroleum Geothermal energy Natural Gas Coal Petroleum Geothermal energy Natural Gas Coal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not present in cement ? Clay Gypsum Alumina Alum Clay Gypsum Alumina Alum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used for making solar cells is Magnesium Sodium Calcium Silicon Magnesium Sodium Calcium Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Leaded gasoline Insecticides Sewage Tobacco Leaded gasoline Insecticides Sewage Tobacco ANSWER DOWNLOAD EXAMIANS APP
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