Which of the following is incorrect about plasma?
(a) Fluorescent tube and neon sign bulbs consist of plasma.
(b) The gas gets ionised when electrical energy flows through it.
(c) It consists of super-energetic and super-excited particles.
(d) The plasma glows with colour which does not depend upon nature of gas.
Answers
Explanation:
CO2 can be easily liquified and even solidified because
(a) It has weak forces of attraction
(b) It has comparatively more force of attraction than other gases
(c) It has more intermolecular space
(d) It is present in atmosphere.
2. Which of the following has heighest kinetic energy?
(a) Particles of ice at 0 °C
(b) Particles of water at 0 °C
(c) Particles of water at 100 °C
(d) Particles of steam at 100 °C
3. Bose-Einstein Condensate have
(a) Very low kinetic energy
(b) Low kinetic energy
(c) High kinetic energy
(d) Highest kinetic energy.
4. Which of the following is most suitable for summer?
(a) Cotton
(b) Nylon
(c) Polyester
(d) Silk.
5. Which of the following is incorrect about plasma?
(a) Fluorescent tube and neon sign bulbs consist of plasma.
(b) The gas gets ionised when electrical energy flows through it.
(c) It consists of super-energetic and super-excited particles.
(d) The plasma glows with colour which does not depend upon nature of gas.
6. The colour of vapours formed on sublimation of iodine solid is
(a) Purple (violet)
(b) Colourless
(c) Yellow
(d) Orange
7. Under which of the following conditions we can boil water at room temperature?
(a) At low pressure
(b) At high pressure
(c) At very high pressure
(d) At atmospheric pressure
8. Which of the following is not endothermic process?
(a) Fusion
(b) Vapourisation
(c) Temperature
(d) Insoluble heavy impurities
9. Which of the following does not affect rate of evaporation?
(a) Wind speed
(b) Surface area
(c) Temperature
(d) Insoluble heavy impurities
10. Kinetic energy of molecules is directly proportional to
(a) Temperature
(b) Pressure
(c) Both (a) and (b)
(d) Atmospheric pressure
1. (b) 2. (d) 3. (a) 4. (a)
5. (d) 6. (a) 7. (a) 8. (c)
9. (d) 10. (a)
Answer:
B is your answer
Explanation:
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