Boiling and Condensation Multiple Choice Questions (MCQs) PDF Download - 100

During the process of boiling, energy conversion that takes place is

1. Kinetic energy to Thermal energy
2. Thermal energy to Kinetic energy
3. Potential energy to Kinetic energy
4. Kinetic energy to Potential energy

An electric kettle raises the temperature of tea from 50 °C to 125 °C with the usage of 15000 J of thermal energy, the heat capacity of the tea is

1. 50 J K^-1
2. 100 J K^-1
3. 200 J K^-1
4. 400 J K^-1

A truck pulls a car with a force of 50 N with the acceleration of 5 m s^-2. The mass of the car would be

1. 45 kg
2. 10 kg
3. 250 kg
4. 55 kg

In reference to the result, the SI unit for moment of force is

1. N/m, where N is Newtons and m is meters
2. N + m, where N is Newtons and m is meters
3. N*m, where N is Newtons and m is meters
4. N - m, where N is Newtons and m is meters

Air molecules

1. have weight but take up no space
2. take up space but have no weight
3. have weight and take up space
4. don't take up space and also have no weight