Heat Capacity: Physics MCQ with Answers PDF Download – Test 140

MCQ 696: In fluids, the kinetic energy is due to:

1. the movement of particles
2. the vibration of particles
3. the collision of particles
4. the intermolecular forces

MCQ 697: A chromium wire resists 400 Ω at ice point and 420 Ω at steam point, and the resistance of wire is 406 Ω, so the room temperature would be:

1. 10 °C
2. 20 °C
3. 30 °C
4. 40 °C

MCQ 698: Which of the following is a characteristic of force? It:

1. can make a stationary object to start move
2. cannot make a moving object to increase speed
3. can make a moving object to decrease speed
4. can change the direction of an object

MCQ 699: Changing or inconsistent speed is termed as:

1. instantaneous speed
2. average speed
3. uniform speed
4. variable speed

MCQ 700: A heater raises the temperature of air in a room from 22 °C to 37 °C with the energy of 7500 J. If the mass of the air is 5 kg, the specific heat capacity of the air would be:

1. 25 J kg^-1 °C^-1
2. 50 J kg^-1 °C^-1
3. 75 J kg^-1 °C^-1
4. 100 J kg^-1 °C^-1