Class 6 Changes Around Us CBSE Questions & Answers

Class 6 · Changes Around Us

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

Questions & Answers

1
Which of the following is a chemical change?
  • A
    Changing of water into ice
  • B
    Rusting of iron
    Correct
  • C
    Dissolving of common salt into water
  • D
    Melting of ice
2
Which of the following is a physical change?
  • A
    Formation of water
  • B
    Burning of candle
  • C
    Dissociation of water
  • D
    Melting of wax
    Correct
3
Chemical change are characterized by
  • A
    Absorption of energy
  • B
    Change in colour
  • C
    Formation of new substance
    Correct
  • D
    Release of energy
4
When ice is kept at room temperature, it starts melting. It is an example of
  • A
    Biological change
  • B
    Exothermic change
  • C
    Chemical change
  • D
    Physical change
    Correct
5
The product formed by dissolving a substance into another is called
  • A
    Compound
  • B
    Solvent
  • C
    Solution
    Correct
  • D
    Solution
6
Rusting of iron is a slow change but burning of petrol is a
  • A
    Physical change
  • B
    Fast change
    Correct
  • C
    Momentary change
  • D
    Periodic change
7
Ripening of fruit is a
  • A
    Slow and desirable change
    Correct
  • B
    Fast and desirable change
  • C
    Slow and physical change
  • D
    Undesirable and fast change
8
During chemical changes, ________________ change may not take place.
  • A
    Size and shape
    Correct
  • B
    Temperature
  • C
    Colour
  • D
    Heat
9
Electric wires or telephone wire became tight during winter and sag a little during summers because metal
  • A
    Contract on heating
  • B
    Expand on heating
    Correct
  • C
    Change in shape on heating
  • D
    Remain same on heating
10
The process of converting gas into liquid is called
  • A
    Cooling
  • B
    Condensation
    Correct
  • C
    Evaporation
  • D
    Freezing
11
Tearing of paper in small pieces is an example of
  • A
    Chemical change
  • B
    Physical change
    Correct
  • C
    Endothermic
  • D
    Exothermic
12
Which of the following is an example of physical change?
  • A
    A bud turning into a flower
  • B
    Rusting of iron
  • C
    Ripening of a tomato
  • D
    Boiling of water
    Correct
13
Blue vitriol is common name of
  • A
    Copper sulphate
    Correct
  • B
    Iron sulphate
  • C
    Copper carbonate
  • D
    Magnesium oxide
14
Chemical name of H2SO4 is
  • A
    Acetic acid
  • B
    Sulphuric acid
    Correct
  • C
    Hydrochloric acid
  • D
    Nitric acid
15
Setting milk into curd is an example of
  • A
    Spontaneous change
  • B
    Undesirable change
  • C
    Chemical change
    Correct
  • D
    Physical change