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Physics, Chemistry, Science
9th
grade
Matter in our sorroundings class 9
21 questions
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- 1. Multiple Choice
The substances which occupy some space and having some mass called
Particles
Impure substance
Ions
Matter
- 2. Multiple Choice
On which factors evaporation does not depend
Humidity
Temperature
Surface area
Quality of matter
- 3. Multiple Choice
The process in which solid is directly convert into gas is called
Condensation
Boiling
Evaporation
None of the above.
- 4. Multiple Choice
On heating, a solid is converted to liquid. This change is called
Melting
Fusion
Diffusion
Freezing
- 5. Multiple Choice
On converting 25°C, 38°C and 66°C to kelvin scale, the correct sequence of temperature will be
298 K, 311 K and 339 K
298 K, 300 K and 338 K
273 K, 278 K and 543 K
298 K, 310 K and 338 K
- 6. Multiple Choice
In which state of matter , process of diffusion is fastest?
Liquids
Gases
Solids
Semi - solids
- 7. Multiple Choice
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
diffusion
transpiration
osmosis
evaporation
- 8. 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
- 9. Multiple Choice
Which of the following is not a characteristic of matter?
Matter is made up of extremely small particles
There is no space between particles of matter
The particles of matter are continuously moving
The particles of matter attract each other.
- 10. Multiple Choice
Which of the following will produce severe burns ?
Cold water
Hot water
Boiling water
Steam
- 11. 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
- 12. Multiple Choice
Which of the following has minimum kinetic energy ?
Particles of ice below 0 °C
Particles of water at 0 °C
Particles of water at 100 °C
Particles of steam at 100 °C
- 13. Multiple Choice
Which one of the following sets of phenomenon would increase on raising the temperature?
Diffusion, evaporation and compression of gases
Evaporation, compression of gases and solubility of solid in liquid
Evaporation, diffusion, expansion of gases and solubility of solid in liquid
Evaporation, solubility of gas in liquid, diffusion and compression of gases.
- 14. 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.
- 15. Multiple Choice
Which of the following is correct order of forces of attraction?
Water > Air > Sand
Air > Sugar > Oil
Air < Water < Sugar
Salt > Air > Juice
- 16. Multiple Choice
Which of the following has minimum kinetic energy ?
Particles of ice below 0 °C
Particles of water at 0 °C
Particles of water at 100 °C
Particles of steam at 100 °C
- 17. Fill in the Blank
The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called _____ .
- 18. Multiple Choice
which of the following is matter
air
stone
cloud
all of them
- 19. Multiple Choice
as the temperature rises, particles of matter move
fast
slow
not effected
none of them
- 20. Multiple Choice
intermixing of two different types of matter on their own is called:
fusion
diffusion
vaporisation
condensation
- 21. Multiple Choice
How many states of matter are there?
3
4
5
2
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