Chemistry The addition of gypsum to portland cement helps in : Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement Rapid setting of cement Preventing rapid setting of cement Increasing the strength of cement Reduction in the cost of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rock salt is a mineral containing Potassium Magnesium Iron Sodium Potassium Magnesium Iron Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical properties of isotopes Must be same Need not be different Must be different Need not be same Must be same Need not be different Must be different Need not be same ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a chemical reaction'? Burning of paper Burning of coal Conversion of water into steam Digestion of food Burning of paper Burning of coal Conversion of water into steam Digestion of food ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Radioactive rays Aviation fuels Volcanic eruptions Chlorofluorocarbons Radioactive rays Aviation fuels Volcanic eruptions Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Carbon dioxide Sulphur dioxide Helium Nitrogen Carbon dioxide Sulphur dioxide Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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