Question

Answer the question

11. Fill in the blanks:
The conversion from gas to solid is called
(a) Sublimation
(b) Condensation
(c) Deposition
(d)fusion

12. State true or false:
Atmospheric pressure is least at sea level.
(a) true
(b) false

13. Fill in the blanks:
Spreading of odour of leaked LPG through out the house is occurred due to
(a) osmosis
(b) diffusion
(c) transpiration
(d) evaporation

14. State true or false:
Sublimation process occurs in camphor.
(a) false
(b) true

15.Fill in the blanks:
The fluorescent tubes and neon sign bulbs glow because of
(a) high current
(b) high pressure
(c) high volume
(d) presence of charged particles

16.What conditions is required for CNG preparation?
(a) Low temperature, low pressure
(b) High temperature, low pressure
(c) High temperature, high pressure
(d) Low temperature , high pressure

17.Which is the special kind of diffusion?
(a) Transpiration
(b) Evaporation
(c) Osmosis
(d) None of these

18.Which state of matter has definite volume but not definite shape?
(a) solid
(b) liquid
(c) gas
(d) plasma

19.Which among has least force of attraction between the particles?
(a) water
(b) oil
(c) salt
(d) nitrogen

20.Fill in the blanks:
Melting point of ice is
A) 273K
(B) 0K
(C) 373K
(D) 100°C​

Answer 1

Answer:

11) b)

12) b)

13)b)

14)b)

15)d)

16)a)

17)c)

18)b)

19)a)

20)a)

Answer 2

Answer:

1. fusion

19. salt

20? 273k

Explanation:

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