Chemistry Ozone depletion in the atmosphere is mainly caused by Nitrogen dioxide Sulphur dioxide Chlorofluorocarbon Hydrogen sulphide Nitrogen dioxide Sulphur 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 Refining Calcination Smelting Roasting Refining Calcination Smelting Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by SO2 and NO2 SO2 and particulates CO2and CFCs NO2and particulates SO2 and NO2 SO2 and particulates CO2and CFCs NO2and particulates ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is biodegradable ? Aluminium Plastic Paper D.T. Aluminium Plastic Paper D.T. ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first organic compound synthesised in the laboratory was Lactic acid Glucose Uric acid Urea Lactic acid Glucose Uric acid Urea ANSWER DOWNLOAD EXAMIANS APP
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