Chemistry A balloon filled with helium rises in air because The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in making smoke bombs? Phosphorus Carbon Hydrogen Sulphur Phosphorus Carbon Hydrogen Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Man dies in the atmosphere of CO, because it Reduces the organic matter of tissues Combines with O2 present in the body Dries up the blood Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 Reduces the organic matter of tissues Combines with O2 present in the body Dries up the blood Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Glycol is added to aviation gasoline because it Reduces consumption of petrol Reduces evaporation of petrol Increases efficiency of petrol Prevents freezing of petrol Reduces consumption of petrol Reduces evaporation of petrol Increases efficiency of petrol Prevents freezing of petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry In its reaction with silver nitrate, C2H2 shows Acidic property Reducing property Oxidising property Basic property Acidic property Reducing property Oxidising property Basic property ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bakelite is a co-polymer of Phenol and Acetaldehyde Benzaldehyde Formaldehyde Cinnaldehyde Acetaldehyde Benzaldehyde Formaldehyde Cinnaldehyde ANSWER DOWNLOAD EXAMIANS APP
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