Melting Point

Q.

The temperature at which the solid melts to become liquid at the atmospheric pressure is called :

1. Melting point

2. Boiling point

3. Freezing point

4. None of the above

Q.

How does a solid change into a liquid on heating?

Q.

What is the effect of temperature on solids?

Q. Is the change of ice into water a temporary or permanent change? Explain.

Q.

What are melting points and boiling points?

Q.

Is the change of ice into water a temporary or permanent change?​ Explain. (3 marks)

Q.

How does a liquid change into solid?

Q.

Name the constant temperature at which a liquid changes to its solid-state.

Q.

The melting point of the solid state of a substance is ${40}^{\circ }C$. The freezing point of the liquid state of the same substance will be:

1. It depends upon nature of the substance.

2. ${35}^{\circ }C$

3. ${40}^{\circ }C$

4. ${45}^{\circ }C$

Q.

If the melting point of ice at a given place is $0^{0}C$, the atmospheric pressure at that place is ________.

Q. The melting point of the solid state of a substance is ${40}^{\circ }C$. The freezing point of the liquid state of the same substance will be:

1. more than ${40}^{\circ }C$
2. equal to ${40}^{\circ }C$
3. less than ${40}^{\circ }C$
4. always ${100}^{\circ }C$

Q. Based on intermolecular force of attraction arrange solid, liquid and gas in ascending order.

1. Solid < liquid < gas
2. Gas < liquid < solid
3. Liquid < gas < solid
4. Liquid < solid < gas

Q.

Define melting point. What is the effect of pressure on melting point?

Q. Which among the following processes involves the reverse of the change in state that occurs during melting?​

Q. Which of the following has the strongest interparticle forces at the room temperature?

1. Nitrogen
2. Mercury
3. Iron
4. Chalk

Q. Two molecules of a solid are kept some distance apart and the force between them is measured. The solid is then melted to form a liquid. Two molecules of the liquid are now kept the same distance apart and the force between them is measured. Which force will be greater? Explain why.