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- 1. Multiple Choice
Which of the following substances does not show phenomenon of sublimation ?
Iodine
Sodium Chloride
Ammnium chloride
Camphor
- 2. Multiple Choice
How many natural physical states of matter are there ?
2
3
4
5
- 3. Multiple Choice
Kelvin =........ + °Celsius
373
173
273
773
- 4. Multiple Choice
The mass per unit volume of a substance is called......
area
density
pressure
rigidity
- 5. Multiple Choice
What is full form of PNG ?
Petrol natural Gas
Pressurised Netural Gas
Pressurised Natural Gas
Pipe Natural Gas
- 6. Multiple Choice
What change is observed in a matter of substance with rise in temperature ?
Weight decreases
weight increase
volume increase
volume decrease
- 7. Multiple Choice
Which of the following matters possesses definite volume but doed not possess shape ?
Oxygen
steel
Chalk
kerosene
- 8. Multiple Choice
At what temperature does water boil at atmospheric pressure?
100 k
100°C
-100°C
273 K
- 9. Multiple Choice
The physical state of water at 273K, Which is the melting point of ice will be observed as.....
Solid
liquid
vapour
solid as well as liquid
- 10. Multiple Choice
The process drying of wet clothes is called.....
Evaporation
condensation
cooling
- 11. Multiple Choice
Ice floats on water because the density of ice is....... Than that of water.
Less
more
Equal to
- 12. Multiple Choice
On keeping naphthalene balls open in air, its volume......
Increases
Decrease
remains same
- 13. Multiple Choice
Every matter has fixed shape.
True
False
- 14. Multiple Choice
The clothes dry faster on a windy day.
True
False
- 15. Multiple Choice
Camphor is not a sublimble substance.
True
False
- 16. Multiple Choice
The concentration of water vapour in the atmosphere is called humidity.
Ture
false
- 17. Multiple Choice
Every matter has mass.
True
False
- 18. Multiple Choice
The kinetic energy of particles in gaseous state is maximum.
True
False
- 19. Multiple Choice
The speed of evaporation increases with increases of free surface area.
Ture
False
- 20. Multiple Choice
The rate of diffusion of gas is less than that of solid and liquid.
True
False
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