The presence of impurities in a substance leads to lowering of the freezing point, this process is called:

Adding solute to the liquid particles will _____________ the temperature.

1. Increase
2. Decrease
3. Remain same
4. Depends on the solute

When sugar is added, what effcts on the boiling and freezing of water  is seen?

1. Boiling point increases, freezing point increases.
2. Boiling point decreases, freezing point increases.
3. Boiling point increases, freezing point decreases.
4. None of the above

What happens when a solute is dissolved in water?

1. Freezing point decreases
2. Freezing point increases
3. Both A and B
4. None of the above

Which one of the following has the maximum freezing point?

1. Water
2. Stone
3. Ice cream
4. Camphor

Which one is following has the minimum melting point?

1. Gallium
2. Germanium
3. Silver
4. Tin

Most __________ and ______________ solids melt over a variety of temperatures.

1. Mixtures, amorphous
2. compounds, mixtures
3. Elements, compounds
4. Atoms, elements

Melting point determines the characteristic nature of:

1. Liquid
2. Solid
3. gases
4. Solid crystal

The ___________the forces of attraction between the particles, the ______ energy is needed to overcome them.

1. Stronger, lesser
2. Lesser, lesser
3. Stronger, more
4. More, More

Which of one of the following statements are incorrect?

1. Solid changes to liquid is called freezing.
2. Solid changes to liquid is called sublimation.
3. Liquid changes to solid is called melting
4. Solid changes to liquid is called melting

When the solid and liquid phase are in equilibrium, the temperature ____________

1. Increases
2. Decreases
3. First increases and then decreases
4. Remains same

1atm pressure is equal to _____ mm Hg:

The Melting point and freezing point occurs at:

1. Different temperatures
2. Same Temperature
3. Temperatures more than melting point
4. Temperatures less than the freezing point

At which point does a substance melt:

1. Solid changing to liquid
2. Liquid changes to solid
3. Solid changes to gas
4. Gas changes to liquid

What is meant by freezing point?

1. Solid changes to liquid
2. Liquid changes to solid
3. Solid changes to gas
4. Gas changes to liquid