Melting and Solidification Quiz Questions and Answers PDF Download - 113

In the process of solidification, change of state that takes place is

1. Liquid to solid
2. Gas to solid
3. Gas to liquid and then to solid
4. Semi-solid to solid

An electrical wire resists 600 Ω at ice point and 700 Ω at steam point, and the resistance of wire is 610 Ω the room temperature would be

1. 15 °C
2. 10 °C
3. 25 °C
4. 50 °C

Feature of the laboratory thermometer that makes it responsive is

1. The thin-walled glass bulb
2. The small bulb containing a small amount of liquid
3. The fine as well as uniform bore of the capillary tube
4. The relatively small size of the thermometer

One watt is equal to

1. One joule per second
2. One second per joule
3. One meter per joule
4. One joule per meter

Statement related to the waves that is incorrect is

1. It provides a mechanism for transfer of energy from one point to another without the transfer of material
2. All waves have the same speed i.e. equal to 3×10⁸ m s^-1
3. The source of any wave is vibration or oscillation
4. All of the above