Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Hydrogen + Liquid Oxygen Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon Liquid Hydrogen + Liquid Oxygen Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Oxygen Nitrogen Silicon Calcium Oxygen Nitrogen Silicon Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The tip of the match-stick contains Red phosphorus Phosphorus trichloride White phosphorus Phosphorus pentoxide Red phosphorus Phosphorus trichloride White phosphorus Phosphorus pentoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Manganese Calcium Magnesium None of these Manganese Calcium Magnesium None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Petroleum is a mixture of Polymers Salts Elements Hydrocarbons Polymers Salts Elements Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alum stops bleeding in minor cuts because of Dialysis Solvation Emulsion Coagulation Dialysis Solvation Emulsion Coagulation ANSWER DOWNLOAD EXAMIANS APP
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