Effect of Change of Temperature on State Change of Matter

Q.

With reference to interconversion of matter on the basis of kinetic theory , explain in brief the conversion of

i) A solid into liquid

ii) A liquid into vapour.

iii) Vapour (or gas) into liquid.

iv) A liquid into solid.

Q.

What is a triple point? What is the difference between the triple point and boiling point?

Q.

The symbols for units are written in capital letters.

1. True
2. False

Q.

1. Water contracts at 4°C

2. Water freezes at 0°C

3. The density of water is maximum at 4°C
4. The density of water is minimum at 4°C

Q.

When a liquid is heated its particles start _________ fast.

Q.

How does a gas change into liquid on cooling?

Q.

Vapour can form liquid by losing energy to surroundings.

1. True

2. False

Q.

The SI unit of temperature is ____________________

Q. What temperature is ${75}^{o}F$ on the kelvin scale ?

1. 348 K
2. 297 K
3. 24 K
4. 215 K

Q. Which of the following statements is wrong?

1. ${}^{o}C$ is used to specify a given temperature on celsius scale
2. The change in temperature on celsius scale or kelvin scale is same
3. Temperature below 1 $K$ are measured by magnetic thermometers
4. Beckmann thermometers are used to read actual b.pt. or f.pt. of liquids