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- 1. Multiple Choice
which of the following factors where evaporation does not depend?
Humidity
Temperature
Surface area
Quality of matter
- 2. Multiple Choice
The temperature at which vapour pressure of liquid is equal to atmospheric pressure is
Melting point
Freezing point
Boiling point
None of the above
- 3. Fill in the Blank
What is the unit of latent heat of fusion?
- 4. Multiple Choice
A few substances are arranged in the increasing order of 'forces of attraction'between their particles.Which one of the following represents a correct arrangement?
Water,air,wind
Air,sugar,oil
Oxygen,water,sugar
Sugar,juice,air
- 5. Multiple Choice
Shivam visited an LPG unit and found that the gas can be liquified at specific conditions of temperature and pressure. Help him to identify the correct set of conditions.
High temperature and high pressure.
Low temperature and low pressure.
Low temperature and high pressure.
High temperature and low pressure.
- 6. Multiple Choice
Which of the following will have more energy at 0 0 C ?
Cold water
Hot water
Boiling water
Steam
- 7. Multiple Choice
Latent heat of fusion is amount of
heat energy required to change 1 kg solid into liquid completely at its melting point.
heat energy required to convert 1 kg solid into liquid at room temperature
heat energy required to change 1 g of solid into liquid completely
heat energy required to change 1 kg of solid into liquid at any temperature.
- 8. Multiple Choice
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
diffusion
transpiration
osmosis
evaporation
- 9. Multiple Choice
The fifth state of matter is given by?
Subhash Chandra Bose
Albert Einstein
Satyendra Nath Bose
Both Satyendra Bose and Einstein
- 10. Multiple Choice
Choose the correct statement out of the following
Conversion of solid into vapours without becoming liquid is called evaporation.
Conversion of vapours into solid without becoming liquid is called sublimation
Conversion of solid into liquid is called sublimation.
Conversion of liquid into vapours is called fusion.
- 11. Multiple Choice
A few substances are arranged in the increasing order of 'forces of attraction'between their particles.Which one of the following represents a correct arrangement?
Water,air,wind
Air,sugar,oil
Oxygen,water,sugar
Sugar,juice,air
- 12. Multiple Choice
The fifth state of matter is given by?
Subhash Chandra Bose
Albert Einstein
Satyendra Nath Bose
Both Satyendra Bose and Einstein
- 13. Multiple Choice
Seema took a 100 ml beaker and filled half the beaker with water and marked the level of water. She dissolved some salt with the help of a glass rod and recorded water level again.
The water level increases appreciably
The water level decreases
The water level remains the same
There is little increase in water level.
- 14. Multiple Choice
Which one of the following is an example of a fluid?
Oxygen
Carbon
Phosphorus
Sulphur
- 15. Multiple Choice
The S.I unit of temperature is:
Celsius
Fahrenheit
Kelvin
None
- 16. Multiple Choice
Particles of matter having space between them is called
Interstitial space
Intermolecular space
Vacant space
None of the above
- 17. Multiple Choice
On which factors evaporation does not depend
Humidity
Temperature
Surface area
Quality of matter
- 18. Multiple Choice
The amount of heat which is used to change the state of matter not for increase the temperature is called
Latent heat
Specific heat
Heat capacity
None of the above.
- 19. Fill in the Blank
Convert 473k into degree Celsius
- 20. Fill in the Blank
What is the unit of pressure?
- 21. Multiple Choice
Which of the following phenomena always results in the cooling effect?
condensation
sublimation
crystallisation
evaporation
- 22. Multiple Choice
In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
- 23. Multiple Choice
which condition out of the following will increase the evaporation of water?
increase in temperature of water
decrease in temperature of water
less exposed surface area of water
adding common salt to water
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