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MCQs

Total Questions : 168 | Page 4 of 17 pages
Question 31. Through separating funnel, immiscible solutions
  1.    cannot be dissolved
  2.    cannot be separated completely
  3.    can be easily decanted
  4.    can be centrifuged
 Discuss Question
Answer: Option B. -> cannot be separated completely
Answer: (b).cannot be separated completely
Question 32. In chromatography, a locating agent is a chemical that reacts to produce
  1.    a condensed solution
  2.    a concentrated solution
  3.    a visible colored product
  4.    a range of pH colors
 Discuss Question
Answer: Option C. -> a visible colored product
Answer: (c).a visible colored product
Question 33. If Ammonium Chloride (NH₄Cl) and Sodium Chloride (NaCl) are heated gently,
  1.    ammonium salt becomes a gas
  2.    gaseous ammonia will become solid on a glass funnel
  3.    sodium chloride is left behind
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 34. Filtration is useful when
  1.    only one solid is soluble
  2.    both solids are soluble
  3.    both solids are insoluble
  4.    when both liquids are miscible
 Discuss Question
Answer: Option A. -> only one solid is soluble
Answer: (a).only one solid is soluble
Question 35. An easy way to separate soluble and insoluble solids is
  1.    filtration
  2.    decanting
  3.    sublimation
  4.    distillation
 Discuss Question
Answer: Option A. -> filtration
Answer: (a).filtration
Question 36. Rare freezing of sea water can be explained through
  1.    lowering the freezing point of water
  2.    presence of impurities like salts
  3.    presence of breathing animals in it
  4.    elevation of the boiling point
 Discuss Question
Answer: Option B. -> presence of impurities like salts
Answer: (b).presence of impurities like salts
Question 37. Distilled water may also be called as
  1.    immiscible
  2.    solute
  3.    solution
  4.    distillate
 Discuss Question
Answer: Option D. -> distillate
Answer: (d).distillate
Question 38. In filtration, filtrate refers to the
  1.    soluble substances that passes through the solution
  2.    the suspension in the liquid
  3.    the residue left on the filter paper
  4.    substance collected over the funnel
 Discuss Question
Answer: Option A. -> soluble substances that passes through the solution
Answer: (a).soluble substances that passes through the solution
Question 39. Solvent refers to the
  1.    gas that will dissolve
  2.    a solid which dissolves
  3.    a liquid which does the dissolving
  4.    a liquid that is dissolved
 Discuss Question
Answer: Option C. -> a liquid which does the dissolving
Answer: (c).a liquid which does the dissolving
Question 40. Fractional distillation is particularly useful if objective is to
  1.    form crystals
  2.    examine sublimates
  3.    examine a immiscible solution of two liquids
  4.    separate a miscible solution of two liquids
 Discuss Question
Answer: Option D. -> separate a miscible solution of two liquids
Answer: (d).separate a miscible solution of two liquids

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