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- 1. 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.
- 2. Multiple Choice
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
- 3. Multiple Choice
Ice floats on water because
it has higher density than water
it has lower density than water due to more volume
it is solid
it is low melting solid
- 4. 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.
- 5. Multiple Choice
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vapourisation
Rises very slowly
Rises rapidly until steam is produced
First rises and then becomes constant
Does not rise at all
- 6. Multiple Choice
When water at 0°C freezes to form ice at the same temperature of 0°C, then it
Absorbs some heat
Releases some heat
Neither absorbs nor releases heat
Absorbs exactly 3.34 x 105J/kg of heat
- 7. Multiple Choice
A student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following will correctly represent the result.
- 8. Multiple Choice
In which form, do the water molecules have less kinetic
energy?
(a) Ice
(b) Water
(c) Steam
(d) All of them have equal kinetic energy
- 9. Multiple Choice
Which of the following has highest kinetic energy?
(a) Particles of ice at 0 degree C
(b) Particles of water at 0 degree C
(c) Particles of water at 100 degree C
(d) Particles of steam at 100 degree C
- 10. Multiple Choice
235K = _________°C
38
-20
20
-38
- 11. Multiple Choice
At what temperature liquid water and steam co-exist?
At the melting point of ice
At the boiling point of water
At the freezing point of water
At the condensation point
- 12. Multiple Choice
Melting point of ice is
273.16K
373.15K
100°C
250.18K
- 13. Multiple Choice
The S.I unit of temperature is:
Celsius
Fahrenheit
Kelvin
None
- 14. Multiple Choice
On converting 308 K, 329 K and 391 K to Celsius scale, the correct sequence of temperatures will be:
33°C, 56°C and 118°C
35°C, 56°C and 119°C
35°C, 56°C and 118°C
56°, 119°C and 35° C
- 15. Multiple Choice
When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
Absorbs some heat
Neither absorbs nor releases heat
Absorbs exactly 3.34 x 105J/kg of heat
Releases some heat
- 16. Multiple Choice
When a solid is heated it's particles begin to vibrate with energy
true
false
- 17. Multiple Choice
Which of the following represented latent heat of fusion in PPT?
- 18. Multiple Choice
Which of the following represented latent heat of vapourization in PPT?
- 19. Multiple Choice
Latent heat of vapourisation is amount of
heat energy required to change 1 kg liquid into vapours completely at its melting point.
heat energy required to convert 1 kg solid into liquid at room temperature
heat energy required to change 1 kg liquid into vapours completely at its boiling point.
heat energy required to change 1 kg of solid into liquid at any temperature.
- 20. Poll
20. For you, individually do you get an any better understanding of topics with my animations?
Answer Honestly with a little thinking.
Yes
No
It actually confuses me even more.
I don't know.
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