Chemistry Ozone depletion in the atmosphere is mainly caused by Sulphur dioxide Nitrogen dioxide Chlorofluorocarbon Hydrogen sulphide Sulphur dioxide Nitrogen dioxide Chlorofluorocarbon Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Calcination Refining Smelting Roasting Calcination Refining Smelting Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following has pH value 7? H2SO4 Sodium Carbonate Pure Water HCl H2SO4 Sodium Carbonate Pure Water HCl ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is commonly used for pulp bleaching in the paper industry? Mild sulphuric acid Glucose isomerase Iodine and water Hydrogen peroxide Mild sulphuric acid Glucose isomerase Iodine and water Hydrogen peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in dating archaeological findings ? 614C 13H 92235U 818O 614C 13H 92235U 818O ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the following is used to dissolve noble metals. That is Nitric acid Aqua ragia Sulphuric acid Hydrochloric acid Nitric acid Aqua ragia Sulphuric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
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