Chemistry The pollutant responsible for ozone holes is ________ SO2 CO CFC CO2 SO2 CO CFC CO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is Ca(OH)2 Na2CO3.10H2O Na2SO4.10H2O NaHCO3 Ca(OH)2 Na2CO3.10H2O Na2SO4.10H2O NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a method of preparing oxygen? Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a mixture of potassium nitrate, powdered charcoal and sulphur called? Gun powder Cement Glass Paint Gun powder Cement Glass Paint ANSWER DOWNLOAD EXAMIANS APP
Chemistry The alkaloid naturally found in coffee, cocoa and cola nut is Morphine Cocaine Tannin Caffeine Morphine Cocaine Tannin Caffeine ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Carbon dioxide Oxygen All of them Hydrogen Carbon dioxide Oxygen All of them Hydrogen ANSWER DOWNLOAD EXAMIANS APP
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