Chemistry Main source of lead pollution is from Sewage Leaded gasoline Insecticides Tobacco Sewage Leaded gasoline Insecticides Tobacco ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metals commonly used for electroplating are Gold, Sodium and Potassium Nickel, Lead and Chromium Gold, Sodium and Chromium Chromium, Copper and Nickel Gold, Sodium and Potassium Nickel, Lead and Chromium Gold, Sodium and Chromium Chromium, Copper and Nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance that is added to make natural rubber strong and more bouncy is Sponge Polythene Sulphur Chlorine Sponge Polythene Sulphur Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used for artificial ripening of green fruit is acetylene ethane ethylene carbon dioxide acetylene ethane ethylene carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Nitrogen Oxygen Silicon Calcium Nitrogen Oxygen Silicon Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 7.2 x 5x x/6 5x/36 7.2 x 5x x/6 5x/36 ANSWER DOWNLOAD EXAMIANS APP
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