Class IX CBSE NCERT Objective Type Questions
Chemistry : Matter in our
surroundings
Series - 2
1. The SI unit of Density
is
A. Gm/ m2
B. Kg/m2
C. Kg/m3
D. None of the above
2. Plasma occurs naturally
in
A. Rivers
B. Plants
C. Stars
D. Atmosphere
3. The changing of a solid
directly into gas on heating is known as
A. Evaporation
B. Condensation
C. Sublimation
D. Filtration
4. The space occupied by the substance is known as
A. Mass
B. Volume
C. Matter
D. Energy
5. Volatile liquids are those
liquids that
A. which do not vaporize
rapidly
B. which vaporize easily at
normal temperature
C. remains in solid form at room
temperature
D. boil only at high
temperatures
6. The SI Unit of temperature
is
A. Pascal
B. Joule
C. Kelvin
D. Centigrade
7. The process in which a
liquid changes into gaseous state at a temperature lower than it's boiling
point is known as
A. Evaporation
B. Condensation
C. Sublimation
D. Filtration
8. Which is known as the fourth
state of matter ?
A. Solid
B. Liquid
C. Gas
D. Plasma
9. LPG and CNG are examples
that explain the process of
A. Pressure in Gas
B. Compressibility in gas
C. Kinetic Energy of Gas
D. Condensation in gas
10. Diffusion is faster in
A. Lower pressure
B. Lower temperature
C. Higher Pressure
D. Higher Temperature
11. How can matter change it's
state
A. By changing temperature
only
B. By changing pressure only
C. By changing both pressure
and temperature
D. All of the above
12. Which gas in it's solid
state is known as dry ice ?
A. Solid Hydrogen
B. Solid Oxygen
C. Solid Carbon dioxide
D. Solid Nitrogen
13. The process of evaporation
of water from the aerial parts of plants especially in leaves is called
A. Evaporation
B. Condensation
C. Osmosis
D. Transpiration
14. The smell of garlic is due
to the presence of the chemical known as
A. Tannin
B. Allicin
C. Melanin
D. Ethane
15. Which process causes
cooling of surroundings ?
A. Evaporation
B. Condensation
C. Sublimation
D. Transpiration
16. Plasma is a mixture of
A. Protons and electrons
B. Ions and radicals
C. Free electrons and
ions
D. Atoms of gas
17. The process by which a gas
changes into liquid is termed as
A. Evaporation
B. Condensation
C. Sublimation
D. Filtration
18. The process of cooling of
glass is known as
A. Galvanizing
B. Decomposing
C. Annealing
D. Redox
19. Carbon dioxide becomes a
white solid at temperatures below
A. 00 C
B. -270 C
C. -560 C
D. -78.60 C
20. The SI unit of pressure
is
A. Kelvin
B. Pascal
C. Celsius
D. Joule
SCROLL BELOW FOR THE
ANSWERS
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Answers for Series 2 Chem
Matter in our Surroundings
1. Kg/m3
2. Stars ( including the sun )
3. Sublimation
4. Volume
5. Which vaporize easily at
normal temperature
6. Kelvin
7. Evaporation
8. Plasma
9. Compressibility in gas
10.Higher Temperature
11.All of the above
12.Solid Carbon dioxide
13.Transpiration
14.Allicin
15.Evaporation
16.Free electrons and ions
17.Condensation
18.Annealing
19. -78.60 C
20.Pascal
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