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 : Phosphorus is kept in water because

Option 1: Its ignition temperature is very high.

Option 2: Its ignition temperature is very low.

Option 3: Its critical temperature is high.

Option 4: Its critical temperature is low.

Question : Absolute zero is a temperature at which

Option 1: Molecular motion in a gas would cease

Option 2: Water freezes

Option 3: All gases become liquid

Option 4: All gases become solid

Question : Which of the following statements is not correct about surface tension?

Option 1: Surface tension is typically measured in dynes cm.

Option 2: The shape of the water drop is spherical due to surface tension.

Option 3: At room temperature, the surface tension of water is less than ethyl alcohol.

Option 4: The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.

Question : Which law was studied in the year 1787, in which it was said that the volume of a gas increases with its absolute temperature and if its absolute temperature decreases, its volume will decrease?

Option 1: Boyle’s law

Option 2: Dalton’s law

Option 3: Avogadro’s law

Option 4: Charles's law