Questions

MCQ

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21 questions · auto-graded multiple-choice test.

MCQ 11 Mark
Colourless components on chromatogram can not be observed by the following :
  • A
    Using UV light
  • B
    Using iodine chamber
  • C
    Using the spraying reagent
  • Using infrared light
Answer
Correct option: D.
Using infrared light
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MCQ 21 Mark
A mixture of acetone and benzene can be seperated by the following method :
  • A
    Simple distillation
  • Fractional distillation
  • C
    Distillation under reduced pressure
  • D
    Sublimation
Answer
Correct option: B.
Fractional distillation
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MCQ 31 Mark
Which technique is widely used in industry to seperate components of mixture and also to purify them ?
  • A
    Steam distillation
  • Chromatography
  • C
    Solvent extraction
  • D
    Filtration
Answer
Correct option: B.
Chromatography
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MCQ 41 Mark
Which of the following techniques is used for seperation of glycerol from soap in soap industry ?
  • Distillation under reduced pressure
  • B
    Fractional distillation
  • C
    Filtration
  • D
    Crystallization
Answer
Correct option: A.
Distillation under reduced pressure
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MCQ 51 Mark
Which of the following methods can be used to separate two compounds with different solubilities in the same solvent?
  • Fractional crystallization
  • B
    Crystallization
  • C
    Distillation
  • D
    Solvent extraction
Answer
Correct option: A.
Fractional crystallization
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MCQ 61 Mark
Which of the following method will give clean separation of sample of chloroform (organic liquid) and water in short time span?
  • A
    TLC
  • B
    Distillation under reduced pressure
  • Solvent extraction
  • D
    Simple distillation
Answer
Correct option: C.
Solvent extraction
Solvent extraction
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MCQ 71 Mark
The principle of differential adsorption is applicable for which of the following chromatographic technique?
  • A
    Column chromatography
  • B
    Thin layer chromatography
  • C
    Paper chromatography
  • Both (A) and (B)
Answer
Correct option: D.
Both (A) and (B)
Both (A) and (B)
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MCQ 81 Mark
Which of the following is a type of partition chromatography?
  • A
    Column chromatography
  • B
    Thin layer chromatography
  • Paper chromatography
  • D
    Both (B) and (C)
Answer
Correct option: C.
Paper chromatography
Paper chromatography
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MCQ 91 Mark
In paper chromatography, the mobile phase rises up the chromatography paper due to _____________
  • A
    evaporation of volatile solvent
  • capillary action
  • C
    gravitational force
  • D
    differential adsorption
Answer
Correct option: B.
capillary action
capillary action
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MCQ 101 Mark
Paper chromatography is based on the principle of ____________
  • A
    adsorption
  • partition
  • C
    solubility
  • D
    volatility
Answer
Correct option: B.
partition
partition
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MCQ 111 Mark
The stationary phase and mobile phase in partition chromatography are ___________ respectively.
  • A
    solid and liquid
  • B
    solid and gas
  • C
    liquid and solid
  • liquid and liquid
Answer
Correct option: D.
liquid and liquid
liquid and liquid
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MCQ 121 Mark
Which of the following is most commonly used for the visualization of amino acids in chromatography?
  • A
    Ultraviolet light
  • Spraying agent
  • C
    Sunlight
  • D
    X-rays
Answer
Correct option: B.
Spraying agent
Spraying agent
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MCQ 131 Mark
The stationary phase and mobile phase in TLC are _________ respectively.
  • solid and liquid
  • B
    solid and gas
  • C
    liquid and solid
  • D
    liquid and liquid
Answer
Correct option: A.
solid and liquid
solid and liquid
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MCQ 141 Mark
Adsorption chromatography is a chromatographic technique based on the principle of ____________
  • differential adsorption
  • B
    differential solubility
  • C
    differential extraction
  • D
    all of these
Answer
Correct option: A.
differential adsorption
differential adsorption
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MCQ 151 Mark
The method used to separate a given organic compound present in aqueous solution by shaking with a suitable solvent in which the compound is more soluble than water is called _____________
  • A
    simple distillation
  • B
    fractional distillation
  • solvent extraction
  • D
    crystallization
Answer
Correct option: C.
solvent extraction
solvent extraction
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MCQ 161 Mark
Which of the following method is used to separate different fractions of crude oil?
  • A
    Solvent extraction
  • B
    Simple distillation
  • Fractional distillation
  • D
    TLC
Answer
Correct option: C.
Fractional distillation
Fractional distillation
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MCQ 171 Mark
Separation of binary mixture of acetone and methyl alcohol is done by ______________
  • A
    simple distillation
  • fractional distillation
  • C
    fractional crystallization
  • D
    re-crystallization
Answer
Correct option: B.
fractional distillation
fractional distillation
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MCQ 181 Mark
In distillation of liquid, water condenser is used _____________
  • A
    to boil the liquid
  • B
    to collect the liquid
  • to condense hot vapours of the liquid
  • D
    to adsorb the liquid
Answer
Correct option: C.
to condense hot vapours of the liquid
to condense hot vapours of the liquid
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MCQ 191 Mark
Which of the following solvents is most commonly used for the crystallization of copper sulphate?
  • Water
  • B
    Acetone
  • C
    Ether
  • D
    Methanol
Answer
Correct option: A.
Water
Water
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MCQ 201 Mark
Impure common salt can be purified by _____________
  • crystallization
  • B
    distillation
  • C
    extraction
  • D
    sublimation
Answer
Correct option: A.
crystallization
crystallization
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MCQ 211 Mark
If a crude solid is made of mainly one substance and has some impurities then it is purified by ____________
  • crystallization
  • B
    distillation
  • C
    extraction
  • D
    sublimation
Answer
Correct option: A.
crystallization
crystallization
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