Chemistry The metallic constituents of hard water are : Iron, tin and calcium Magnesium, tin and iron Magnesium, calcium and tin Calcium, magnesium and iron Iron, tin and calcium Magnesium, tin and iron Magnesium, calcium and tin Calcium, magnesium and iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not a green house gas ? CO2 N2O CH4 Chlorofluorocarbons CO2 N2O CH4 Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is found in all organic compounds Carbon Nitrogen Oxygen Calcium Carbon Nitrogen Oxygen Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to SO2 NO2 SO3 N2O SO2 NO2 SO3 N2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ? Sodium Nitrogen Hydrogen Neon Sodium Nitrogen Hydrogen Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which None of these Increases the rate of the reaction Has no action on the rate of the reaction Decreases the rate of reaction None of these Increases the rate of the reaction Has no action on the rate of the reaction Decreases the rate of reaction ANSWER DOWNLOAD EXAMIANS APP
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