Chemistry The addition of gypsum to portland cement helps in : Reduction in the cost of cement Rapid setting of cement Increasing the strength of cement Preventing rapid setting of cement Reduction in the cost of cement Rapid setting of cement Increasing the strength of cement Preventing rapid setting of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? NO2 SO2 Dust particles Photochemical smog NO2 SO2 Dust particles Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not a green house gas ? Chlorofluorocarbons CH4 CO2 N2O Chlorofluorocarbons CH4 CO2 N2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a micro-element ? Oxygen Hydrogen Chlorine Nitrogen Oxygen Hydrogen Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in the manufacture of lead pencil is Graphite Mica Lead Carbon Graphite Mica Lead Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Hydrogen peroxide Sodium peroxide Barium peroxide Ozone Hydrogen peroxide Sodium peroxide Barium peroxide Ozone ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS