Chemistry Which substance is used to retard the setting action of cement? Al2O3 CaO Na2O + K2O CaSO4, 2H2O Al2O3 CaO Na2O + K2O CaSO4, 2H2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry In deep-sea diving, divers use a mixture of gases consisting of oxygen and Argon Nitrogen Helium Hydrogen Argon Nitrogen Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry In addition to hydrogen, the other abundant element present on Sun’s surface is Helium Oxygen Argon Neon Helium Oxygen Argon Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hardest allotrope of carbon is Lamp black Diamond Graphite Coke Lamp black Diamond Graphite Coke ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atomic number is the number equal to Protons Electrons Neutrons None of these Protons Electrons Neutrons None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas emitted by power stations causes acid rain? Sulphur dioxide Helium Nitrogen Carbon dioxide Sulphur dioxide Helium Nitrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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