Class 6 Separation Of Substances CBSE Questions & Answers

Class 6 · Separation Of Substances

This is Science Class 6 Separation of Substances CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Iodine and camphor on heating undergo
  • A
    Condensation
  • B
    Sublimation
    Correct
  • C
    Evaporation
  • D
    Melting
2
Distillation is the process based on the principle of difference in
  • A
    Sublimation
  • B
    Freezing point
  • C
    Melting point
  • D
    Boiling point
    Correct
3
Components of air can be separated by the process of
  • A
    Fragmentation
  • B
    Simple distillation
  • C
    Condensation
  • D
    Fractional distillation
    Correct
4
Chromatography is used to separate
  • A
    Dyes in black ink
    Correct
  • B
    Stones from rice
  • C
    Cream from milk
  • D
    Salt from sea water
5
Scrap iron can be separated from heap of waste materials by using
  • A
    Electric current
  • B
    Big electromagnet
    Correct
  • C
    Dissolving in water
  • D
    Hand picking
6
Mixture of ammonium chloride and common salt can be separated by the process of
  • A
    Filtration
  • B
    Sublimation
    Correct
  • C
    Sedimentation
  • D
    Evaporation
7
The mixture of sulphur and sand can be separated by dissolving the mixture in
  • A
    Water
  • B
    Alcohol
  • C
    Copper sulphate
  • D
    Carbon disulphide
    Correct
8
Suspended impurities in water can removed by loading using
  • A
    Carbon disulphide
  • B
    Alum
    Correct
  • C
    Carbon dioxide
  • D
    Ammonium chloride
9
The process of cooling hot, concentrated solution to obtain crystals is called
  • A
    Evaporation
  • B
    Sedimentation
  • C
    Crystallization
    Correct
  • D
    Condensation
10
The technique of separating two or more dissolved solids present in very small quantities is called
  • A
    Chromatography
    Correct
  • B
    Fractional distillation
  • C
    Evaporation
  • D
    Crystallization
11
The process by which the unwanted solid particles are removed from the liquid is called
  • A
    Sedimentation
  • B
    Filtration
    Correct
  • C
    Loading
  • D
    Decantation
12
A beaker containing 50 ml of water is mixed with 5 g of common salt, the volume of water in beaker will be
  • A
    More than 50 ml
  • B
    Less than 50 ml
  • C
    50 ml
    Correct
  • D
    Exactly 40 ml
13
The separation of grains from husk in done by the process of
  • A
    Winnowing
    Correct
  • B
    Threshing
  • C
    Sieving
  • D
    Hand picking
14
Which of the following works on the principle of centrifugation?
  • A
    Blade of fan
  • B
    Dryer of washing machine
    Correct
  • C
    Melting of ice
  • D
    Needle of sewing machine
15
Alcohol and water are miscible liquid. They can be separated by the process of
  • A
    Sedimentation
  • B
    Fractional distillation
    Correct
  • C
    Simple distillation
  • D
    Loading