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MCQs

Total Questions : 1678 | Page 2 of 168 pages
Question 11. Number of subatomic particles in atoms is more than
  1.    200
  2.    67
  3.    89
  4.    100
 Discuss Question
Answer: Option D. -> 100
Answer: (d).100
Question 12. Word atom was derived from
  1.    Atama
  2.    Atomos
  3.    atim
  4.    atme
 Discuss Question
Answer: Option B. -> Atomos
Answer: (b).Atomos
Question 13. Rate of diffusion is
  1.    increased if the temperature is increased
  2.    decreases if the kinetic energy decreases
  3.    decreases if the molecular mass is increased
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 14. Word kinetic refers to
  1.    locomotion
  2.    vibration
  3.    motion
  4.    resonance
 Discuss Question
Answer: Option C. -> motion
Answer: (c).motion
Question 15. Evaporation occurs only
  1.    after boiling
  2.    after extreme cooling
  3.    at the surface of a liquid
  4.    if boiling occurs at atmospheric pressure
 Discuss Question
Answer: Option C. -> at the surface of a liquid
Answer: (c).at the surface of a liquid
Question 16. Particles in solids have
  1.    least energy
  2.    lesser energy
  3.    greatest energy
  4.    greatest distances
 Discuss Question
Answer: Option A. -> least energy
Answer: (a).least energy
Question 17. Methylated spirit is a form of
  1.    liquid
  2.    gas
  3.    crystal
  4.    aqueous
 Discuss Question
Answer: Option A. -> liquid
Answer: (a).liquid
Question 18. Fixed volumes is a characteristic of
  1.    liquids
  2.    solids
  3.    gases
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 19. Presence of impurities cause
  1.    a rise in boiling point
  2.    a fall in melting point
  3.    a fall in condensation point
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 20. Melting and boiling points of ___________ are always above room temperature
  1.    solids
  2.    liquids
  3.    gases
  4.    all of these
 Discuss Question
Answer: Option A. -> solids
Answer: (a).solids

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