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MCQs

Total Questions : 168 | Page 9 of 17 pages
Question 81. Liquids that do not mix and can be separated in a separating funnel are called as
  1.    miscible
  2.    residue
  3.    sublimate
  4.    immiscible
 Discuss Question
Answer: Option D. -> immiscible
Answer: (d).immiscible
Question 82. Sublimation, dissolving and filtration can only be carried out in
  1.    soluble-substances in solution
  2.    insoluble substances in liquids
  3.    liquid-liquid mixtures
  4.    solid-solid mixtures
 Discuss Question
Answer: Option D. -> solid-solid mixtures
Answer: (d).solid-solid mixtures
Question 83. Anhydrous agent used to remove water from ethanol distillate may be
  1.    iodine
  2.    hydrocarbon
  3.    calcium chloride
  4.    naphthalene
 Discuss Question
Answer: Option C. -> calcium chloride
Answer: (c).calcium chloride
Question 84. Process quicker than filtration but not so effective is
  1.    decanting
  2.    centrifuging
  3.    crystallization
  4.    fractional distillation
 Discuss Question
Answer: Option A. -> decanting
Answer: (a).decanting
Question 85. Crystallization is used to
  1.    purify sugar
  2.    purify fertilizers
  3.    separate salt from solution
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 86. Example of drying agent is
  1.    silicon dioxide
  2.    acetic acid
  3.    sulphuric acid
  4.    phosphorus pentaoxide
 Discuss Question
Answer: Option D. -> phosphorus pentaoxide
Answer: (d).phosphorus pentaoxide
Question 87. Science of chemical characterization is
  1.    Analytical chemistry
  2.    Physical chemistry
  3.    Organic chemistry
  4.    Inorganic chemistry
 Discuss Question
Answer: Option A. -> Analytical chemistry
Answer: (a).Analytical chemistry
Question 88. Paper is dipped in solvent mixture at about
  1.    6-7cm
  2.    5-6cm
  3.    3-4cm
  4.    4-8cm
 Discuss Question
Answer: Option B. -> 5-6cm
Answer: (b).5-6cm
Question 89. Angle of apex of filter paper should be slightly greater than
  1.    35 degree
  2.    40 degree
  3.    60 degree
  4.    50 degree
 Discuss Question
Answer: Option C. -> 60 degree
Answer: (c).60 degree
Question 90. In partition chromatography stationary phase is
  1.    solid
  2.    liquid
  3.    gas
  4.    none of these
 Discuss Question
Answer: Option B. -> liquid
Answer: (b).liquid

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