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Physical and Chemical Change

Physical and chemical change. Class VII

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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following changes are both physical and chemical?

  1. Melting of wax and burning of wax
  2. Ripening of bananas
  3. Burning of paper
  4. Setting of curd
  5. Melting of ice
Question 2 Multiple Choice (Single Answer)

Which of the following changes is/are physical?

  1. Melting of ice
  2. Melting of wax
  3. Beating of aluminium to make aluminium foil
  4. Formation of steam from water
  5. All of the above
Question 3 Multiple Choice (Single Answer)

In which of the following options is a new substance formed?
a. Physical change
b. Chemical change
c. Reversible change

  1. Only a
  2. Only b
  3. Only c
  4. Only a and b
  5. All of the above
Question 4 Multiple Choice (Single Answer)

Which of the following changes take(s) place when iron react with copper sulphate?
a. Physical change
b. Chemical change
c. Reversible change
d. Irreversible change

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. Both b and d
Question 5 Multiple Choice (Single Answer)

Which of the following is/are not physical change features?
a. No new substance is formed
b. Can be reversed
c. Permanent change
d. Temporary change

  1. Only a
  2. Only b
  3. Only c
  4. Both b and c
  5. Only d
Question 6 Multiple Choice (Single Answer)

Which of the following options is/are used to obtain pure substance from its solution?
a. Evaporation
b. Condensation
c. Crystallisation
d. Sedimentation

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. Both a and c
Question 7 Multiple Choice (Single Answer)

Which of the following options is not a reversible change?

  1. The changing of water to steam
  2. The melting of ice
  3. The burning of kerosene
  4. Freezing of water
  5. Folding of paper
Question 8 Multiple Choice (Single Answer)

Which of the following options is/are the characterstic(s) of chemical change?
a. Irreversible
b. Permanent change
c. New substance formed
d. Temporary change

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. a, b and c
Question 9 Multiple Choice (Single Answer)

Which of the following methods is/are used to prevent rusting?
a. Crystallisation
b. Evaporation
c. Galvanisation
d. Depositing a layer of zinc

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. Both c and d
Question 10 Multiple Choice (Single Answer)

Which of the following changes can be reversed?
a. Paper burning into ash
b. Nail getting rusted
c. Water changing into ice
d. Beating of aluminium to make aluminium foil paper

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. Both c and d
Question 11 Multiple Choice (Single Answer)

Which of the following changes is/are chemical?
a. DIssolving salt and sugar in water
b. The curding of milk
c. Freshly cut brinjal or apple
d. Melting of ice

  1. Only a
  2. Only b
  3. Only c
  4. Only d
  5. Both b and c
Question 12 Multiple Choice (Single Answer)

Which of the following is/are the characteristic(s) of physical change?
a. Permanent change
b. Irreversible change
c. Temporary change

  1. Only a
  2. Only b
  3. Both a and b
  4. Only c
  5. Both b and c
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