10th Samacheer Quiz

Q1. When a body is heated, what is the usual change in its mass?

Remains unchanged Doubles Becomes half Becomes zero

Q2. What is the approximate value of the universal gas constant?

8.31 J mol⁻¹ K⁻¹ 1.38 J mol⁻¹ K⁻¹ 9.8 J mol⁻¹ K⁻¹ 6.02 J mol⁻¹ K⁻¹

Q3. According to Avogadro’s law, at constant temperature and pressure, volume is proportional to:

Number of moles Square of pressure Square of temperature Mass only

Q4. The high specific heat capacity of water supports which application?

Using water as a coolant Making batteries Producing light Producing sound

Q5. The SI unit of temperature is kelvin.

Kelvin Celsius Joule Newton

Q6. By which mode does heat from the Sun reach Earth?

Radiation Conduction Convection Sound only

Q7. What is 27°C in kelvin?

300 K 246 K 273 K 310 K

Q8. A gas is heated from 300 K to 600 K at constant pressure. Its volume becomes:

Double Half Unchanged Four times

Q9. Which material is a good conductor of heat?

Copper Wood Rubber Air

Q10. As the temperature of a body increases, how does the average kinetic energy of its particles generally change?

Decreases Remains unchanged Increases Becomes zero

Thermal Physics