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MCQs

Total Questions : 168 | Page 7 of 17 pages
Question 61. Whatmann filter paper used for paper chromatography is about
  1.    30 cm
  2.    20 cm
  3.    50 cm
  4.    35cm
 Discuss Question
Answer: Option B. -> 20 cm
Answer: (b).20 cm
Question 62. Pore size of filter paper depends upon size of
  1.    funnel
  2.    medium
  3.    precipitate
  4.    solvent
 Discuss Question
Answer: Option C. -> precipitate
Answer: (c).precipitate
Question 63. Stem of funnel should have length of few
  1.    millimeters
  2.    meters
  3.    cm
  4.    inches
 Discuss Question
Answer: Option D. -> inches
Answer: (d).inches
Question 64. Greek word from which chromatography is derived is
  1.    chroma
  2.    chroming
  3.    cromatus
  4.    Khromatos
 Discuss Question
Answer: Option D. -> Khromatos
Answer: (d).Khromatos
Question 65. To prepare fluted filter paper arrangement formed is
  1.    fan like
  2.    fish like
  3.    star like
  4.    flask like
 Discuss Question
Answer: Option A. -> fan like
Answer: (a).fan like
Question 66. Fresh sea water is referred to as impure because
  1.    it contains only oxygen
  2.    it contains aquatic animals
  3.    it contains aquatic plants
  4.    it contains dissolved salts
 Discuss Question
Answer: Option D. -> it contains dissolved salts
Answer: (d).it contains dissolved salts
Question 67. Iodine-salt mixture can be separated through
  1.    simple distillation
  2.    simple filtration
  3.    sublimation
  4.    fractional distillation
 Discuss Question
Answer: Option C. -> sublimation
Answer: (c).sublimation
Question 68. Distillate formed after distillation is
  1.    a diluted solution
  2.    may contain impurities
  3.    a condensed solution
  4.    a concentrated solution
 Discuss Question
Answer: Option C. -> a condensed solution
Answer: (c).a condensed solution
Question 69. Liquids that mix together are called as
  1.    mixtures
  2.    miscible
  3.    immiscible
  4.    fraction
 Discuss Question
Answer: Option B. -> miscible
Answer: (b).miscible
Question 70. In vacuum distillation, substance boils at
  1.    its exact temperature
  2.    a temperature slightly above its boiling point
  3.    a temperature below its boiling point
  4.    under high pressures
 Discuss Question
Answer: Option C. -> a temperature below its boiling point
Answer: (c).a temperature below its boiling point

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