Question : It is easy to burst a gas filled balloon with a needle, than with a nail, it is because

Option 1: nail is more longer than needle

Option 2: nail exerts more pressure than needle on the balloon

Option 3: needle exerts more pressure than nail on the balloon

Option 4: gas is reactive with the needle

Question : A real gas can act as an ideal gas in:

Option 1: high pressure and low temperature

Option 2: low pressure and high temperature

Option 3: high pressure and high temperature

Option 4: low pressure and loe temperature

Question : The molecular mass of a gas is:

Option 1: twice its vapour pressure

Option 2: equal to its vapour pressure

Option 3: half its vapour pressure

Option 4: not related to its vapour pressure

Question : Which of the following elements is more reactive than copper?

Option 1: Gold

Option 2: Zinc

Option 3: Silver

Option 4: Platinum

Question : Which among the following will be a negative ion?

Option 1: If it has more electron than protons

Option 2: If it has more electrons than neutrons

Option 3: If it has more protons than electrons

Option 4: If it has more protons than neutrons

Question : Helium is added to the oxygen supply of deep-sea divers because it is 

Option 1: less poisonous than nitrogen

Option 2: lighter than nitrogen

Option 3: readily miscible with oxygen

Option 4: less soluble in blood than Nitrogen at high-pressure