General
✓✗Gases can be easily compressed because
- The particles of gas are very tiny
- The particles have least force of attraction between them
- The particles have maximum space between them
- The particles have low density
General
✓✗Which of the following factor is responsible for faster cooling of tea in a saucer ?
- Greater surface area
- Greater humidity
- Low humidity
- All of these
General
✓✗Correct definition of “Latent heat of fusion” is -
- It is the quantity of heat in Celsius required to convert 1 gm of solid into liquid without any change in temperature
- It is the quantity of heat in Joules required to convert 1 Kg. of solid into liquid, without any change in temperature
- It is the quantity of heat in Joules required to convert 1 gm of solid into liquid without any change in temperature
- None of these is correct
General
✓✗Plasma is naturally found in/on
- Earth’s atmosphere
- Deep oceans
- Stars
- Volcanoes
General
✓✗If a liquid changes into its gaseous state at a temperature below its boiling point the process is called
- Vaporization
- Boiling
- Evaporation
- None of these
General
✓✗Which of the following is a compressed gas?
- LPG
- CNG
- Oxygen in oxygen cylinders
- All of these
General
✓✗Which of the following is an example of cooling caused by evaporation?
- During summer water is kept in earthen pots
- Cotton clothes during summer are comfortable
- Sweating helps to maintain our body temperature
- All of these
General
✓✗25°C =______ K
- 298
- 248
- 25
- None of these
General
✓✗Heat energy required for the conversion of liquid to gas is called
- Latent heat of fusion
- Latent heat of melting
- Latent heat of vaporization
- Latent heat of liquefaction
General
✓✗Dry ice is
- Solid
- White
- Very cold
- All