Chemistry What particles move around the nucleus of an atom and are negatively charged? Electrons Positrons Neutrons Protons Electrons Positrons Neutrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used as an anti-freeze for the automobile engines ? Methanol Propyl alcohol Ethylene glycol Ethanol Methanol Propyl alcohol Ethylene glycol Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Uninterrupted power supply (UPS) Battery Power transmittor Generator Uninterrupted power supply (UPS) Battery Power transmittor Generator ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Oxygen + Liquid Argon 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Formation of ozone hole is maximum over India Europe Antarctica Africa India Europe Antarctica Africa ANSWER DOWNLOAD EXAMIANS APP
Chemistry Where does the oxygen that keeps us alive come from? Carbon dioxide Carbonates absorbed from soil Oxides of minerals Water Carbon dioxide Carbonates absorbed from soil Oxides of minerals Water ANSWER DOWNLOAD EXAMIANS APP