Which of the following is true for a chemical change?
(I) New substance is formed.
(II) The change is reversible
(III) The change is permanent

Only (I)

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Only (I) and (III)

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Only (I) and (II)

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(I), (II) and (III)

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Solution

The correct option is B Only (I) and (III)
A chemical change occurs with the change in composition. It cannot be reversed and is permanent in nature.

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Similar questions

Q. Changing of water to ice is a physical change because
i. a new substance is formed
ii. ice is another form of water
iii. the change is reversible
iv. heat is taken away from water

(a) i, iii, iv are correct
(b) i, ii, iv are correct
(c) ii, iii, iv are correct
(d) i, ii, iii are correct

Question 4

Which of the following is/are true when milk changes into curd?

(i) Its state is changed from liquids to semi-solid.
(ii) It changes colour.
(iii) It changes taste.
(iv) The change cannot be reversed.

Choose the correct option from below :
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i), (iii) and (iv)
(d) (i) to (iv)

Q. Which of the following is true for a chemical change?
(I) New substance is formed.
(II) The change is reversible
(III) The change is permanent

Q. Which of the following is true for physical change?

(i) No new substance is formed.
(ii) The change is reversible
(iii) The change is temporary

In a physical change, which of the following takes place?
(i) No new substance is formed.
(ii) The change is reversible
(iii) The change is temporary

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Which of the following is true for a chemical change? (I) New substance is formed. (II) The change is reversible (III) The change is permanent

The correct option is B Only (I) and (III)A chemical change occurs with the change in composition. It cannot be reversed and is permanent in nature.

Which of the following is true for a chemical change?
(I) New substance is formed.
(II) The change is reversible
(III) The change is permanent

The correct option is B Only (I) and (III)
A chemical change occurs with the change in composition. It cannot be reversed and is permanent in nature.