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
Formation of a compound is
  • A
    Temporary change
  • B
    Chemical change
    Correct
  • C
    Physical change
  • D
    Reversible change
2
Which of the following is a reversible change?
  • A
    Burning of matchstick
  • B
    Changing of milk into curd
  • C
    Germination of seed
  • D
    Melting of ice
    Correct
3
Chemical changes are
  • A
    Always irreversible
    Correct
  • B
    Mostly reversible
  • C
    Always reversible
  • D
    Mostly irreversible
4
In chemical change
  • A
    Substance remain same
  • B
    Change is reversible
  • C
    Molecules of a substance change
    Correct
  • D
    Molecules of the substance do not change
5
Which of the following is an example of physical change?
  • A
    Boiling of water
    Correct
  • B
    A bud turning into flower
  • C
    Rusting of iron
  • D
    Ripening of fruit
6
Sea water is a
  • A
    Mixture
    Correct
  • B
    Molecule
  • C
    Element
  • D
    Compound
7
Which of the following is a reversible change?
  • A
    Germination of seed
  • B
    Changing of milk into curd
  • C
    Burning of match stick
  • D
    Melting of wax
    Correct
8
Which of the following is an example of chemical change?
  • A
    Burning of candle wick
    Correct
  • B
    Woolen yarn to knitted sweater
  • C
    Heating of iron rod
  • D
    Melting of wax
9
In a chemical change
  • A
    Change is reversible
  • B
    Molecule of substance change
    Correct
  • C
    Molecule of substance do not change
  • D
    Substance remain the same
10
Which of the following is an example of physical change?
  • A
    Boiling of water
    Correct
  • B
    A bud turning into a flower
  • C
    Ripening of a tomato
  • D
    Rusting of iron
11
Burning of candle is
  • A
    Neither physical and chemical change
  • B
    Physical change
  • C
    Both physical and chemical change
    Correct
  • D
    Chemical change
12
Which one is a periodic change
  • A
    Dissolving sugar in water
  • B
    Change in season
    Correct
  • C
    Melting of ice
  • D
    Change in season
13
Rusting of iron is a
  • A
    Desirable change
  • B
    Physical change
  • C
    Periodic change
  • D
    Chemical change
    Correct
14
Souring of milk is a
  • A
    Desirable change
  • B
    Undesirable change
    Correct
  • C
    Periodic change
  • D
    Physical change
15
In a chemical change
  • A
    Energy is given out
  • B
    Energy is always absorbed
  • C
    Energy change do not occur
  • D
    Energy is either absorbed or given out
    Correct