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MCQs

Total Questions : 1678 | Page 3 of 168 pages
Question 21. A much slower process than boiling is
  1.    melting
  2.    evaporation
  3.    curdling
  4.    sublimation
 Discuss Question
Answer: Option B. -> evaporation
Answer: (b).evaporation
Question 22. Substances which transform from solid into a gas directly, are called as
  1.    Amphoteric oxides
  2.    basic oxides
  3.    sublimations
  4.    neutral oxides
 Discuss Question
Answer: Option C. -> sublimations
Answer: (c).sublimations
Question 23. Particles are arranged in regular rows in
  1.    solids
  2.    liquids
  3.    gases
  4.    all of these
 Discuss Question
Answer: Option A. -> solids
Answer: (a).solids
Question 24. Liquids may become vapors
  1.    upon boiling only
  2.    without boiling
  3.    at a temperature below the boiling point of a liquid
  4.    at a temperature above the boiling point of a liquid
 Discuss Question
Answer: Option C. -> at a temperature below the boiling point of a liquid
Answer: (c).at a temperature below the boiling point of a liquid
Question 25. A constant temperature at which a pure liquid changes into a gas is called
  1.    latent heat of vaporization
  2.    depression in freezing point
  3.    boiling point
  4.    melting point
 Discuss Question
Answer: Option C. -> boiling point
Answer: (c).boiling point
Question 26. Natural mixing of particles is called as
  1.    sublimation
  2.    purification
  3.    distillation
  4.    diffusion
 Discuss Question
Answer: Option D. -> diffusion
Answer: (d).diffusion
Question 27. Word kinetic comes from
  1.    Greek
  2.    Latin
  3.    Spanish
  4.    German
 Discuss Question
Answer: Option A. -> Greek
Answer: (a).Greek
Question 28. As compared to solids, liquids have
  1.    less distance between particles
  2.    greater distance between particles
  3.    there is a strong attraction between particles
  4.    are highly compressible
 Discuss Question
Answer: Option B. -> greater distance between particles
Answer: (b).greater distance between particles
Question 29. Ability of dissolving animal fats is found in
  1.    solid carbon dioxide
  2.    liquid carbon dioxide
  3.    gaseous carbon dioxide
  4.    all of these
 Discuss Question
Answer: Option B. -> liquid carbon dioxide
Answer: (b).liquid carbon dioxide
Question 30. Melting point of water is
  1.    0 °C
  2.    −210 °C
  3.    −78 °C
  4.    20 °C
 Discuss Question
Answer: Option A. -> 0 °C
Answer: (a).0 °C

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