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
Only type of water that is pure is
  • A
    Tap water
  • B
    Distilled water
    Correct
  • C
    Mineral water
  • D
    Sea water
2
Sugar dissolves in water because it is ___________ in water.
  • A
    Saturated
  • B
    Solid
  • C
    Insoluble
  • D
    Soluble
    Correct
3
Solid can be separated from solution by
  • A
    Freezing
  • B
    Condensation
  • C
    Evaporation
    Correct
  • D
    Melting
4
The chemical name of common salt is
  • A
    Sodium carbonate
  • B
    Copper sulphate
  • C
    Magnesium chloride
  • D
    Sodium chloride
    Correct
5
Pure dry salt can be extracted from rock salt by the process of
  • A
    Condensation and evaporation
  • B
    All of these
  • C
    Sedimentation and filtration
  • D
    Dissolution and filtration
    Correct
6
Pure water can be obtained from impure water by the process of
  • A
    Sieving
  • B
    Distillation
    Correct
  • C
    Sedimentation
  • D
    Filtration
7
Fractional distillation process is used for separating
  • A
    Water and kerosene oil
  • B
    Water and salt
  • C
    Salt from sea water
  • D
    Petrol and kerosene oil
    Correct
8
In same volume of water, more sugar can be dissolved by increasing
  • A
    Height
  • B
    Temperature
    Correct
  • C
    Humidity
  • D
    Size of container
9
Which of the following is a volatile substance?
  • A
    Copper sulphate
  • B
    Sodium carbonate
  • C
    Ammonium chloride
    Correct
  • D
    Iron oxide
10
Which process should be used for small piece of metals from engine oil/
  • A
    Sublimation
  • B
    Filtration
    Correct
  • C
    Evaporation
  • D
    Decantation
11
Iron pins from sand can be separated by
  • A
    Sublimation
  • B
    Centrifugation
  • C
    Sedimentation
  • D
    Magnetic separation
    Correct
12
Which of the following is a pure substance?
  • A
    Air
  • B
    Mercury
    Correct
  • C
    Brick
  • D
    Wood
13
A solution is a
  • A
    Pure mixture
  • B
    Homogenous mixture
    Correct
  • C
    Impure mixture
  • D
    Heterogeneous mixture
14
The dust particles in the water can be helped to settle down faster by using
  • A
    Common salt
  • B
    Alum
    Correct
  • C
    Sugar
  • D
    Alcohol
15
Homogenous mixture are called
  • A
    Compound
  • B
    Solution
    Correct
  • C
    Colloid
  • D
    Suspension