Chemistry What is the element that is in the highest percentage in the composition of the earth ? Oxygen Silicon Magnesium Iron Oxygen Silicon Magnesium Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Submarines move under water. They have engines that run on Petrol and oxygen Diesel Batteries Steam Petrol and oxygen Diesel Batteries Steam ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms having the same number of protons but different number of neutrons are called : Anions Cations Isotopes Higgs-boson Anions Cations Isotopes Higgs-boson ANSWER DOWNLOAD EXAMIANS APP
Chemistry During fermentation of sugar, the compound which is always formed is : Acetic Acid Methyl Alcohol Ethylene Ethyl Alcohol Acetic Acid Methyl Alcohol Ethylene Ethyl Alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is non-radioactive ? Uranium Zirconium Thorium Plutonium Uranium Zirconium Thorium Plutonium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is commonly used for pulp bleaching in the paper industry? Mild sulphuric acid Hydrogen peroxide Iodine and water Glucose isomerase Mild sulphuric acid Hydrogen peroxide Iodine and water Glucose isomerase ANSWER DOWNLOAD EXAMIANS APP
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