Question : Absolute zero is defined as:

Option 1: the temperature at which all molecular motion ceases.

Option 2: at which water boils at 298K.

Option 3: at which liquid helium boils.

Option 4: at which the volume becomes zero.

Question : An emulsion is a colloid of a

Option 1: Gas in a liquid

Option 2: liquid in a liquid

Option 3:  liquid in a gas

Option 4: Gas in a solid

Question : Mercury is a:

Option 1: solid metal

Option 2: liquid metal

Option 3: Solid non-metal

Option 4: liquid non-metal

Question : The average kinetic energy of the molecules of an ideal gas is directly proportional to:

Option 1: velocity of molecules

Option 2: mass of molecules

Option 3: absolute temperature of the gas

Option 4: temperature of environment

Question : The gas which turn into liquid at the lowest temperature among the following is

Option 1: Hydrogen

Option 2: Oxygen

Option 3: Helium

Option 4: Nitrogen