Latent Heat

Q.

The amount of heat per unit mass required to raise the temperature by one degree Celsius is known as latent heat.

1. True

2. False

Q.

The heat released when steam is converted into water is equal to?

1. Latent heat of condensation

2. Latent heat of fusion

3. Latent heat of vaporisation

4. Latent heat of fission

Q.

A steam at ${100}^{o}C$ is slowly cooled and converted to ice at $-{10}^{o}C.$ Which of the following curves represents the phenomenon qualitatively?

1. 
2. 
3. 
4. 

Q. Two steel balls P and Q have same readings when measured by thermometers of Celsius readings and Fahrenheit readings respectively. Then,

1. Ball P has greater temperature than ball Q
2. Both the balls P and Q have same temperature
3. Ball P has lower temperature than ball Q
4. None of these

Q. Does charcole on burning gives energy?