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Question

Which of the following statement is incorrect?

Statement 1: Changes are the differences in the state of affairs.

Statement 2: Change can be grouped into reversible and irreversible change.

Statement 3: Change that can't be undone is reversible change and change that can be undone is irreversible change.

Statement 4: There are many ways in which change can be brought.



A

Statement 1

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B

Statement 2

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C

Statement 3

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D

All the statements

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Solution

The correct option is B

Statement 3


Statement 3 is incorrect.

It should be: "Changes that can be undone are reversible change while the changes that can't be undone are irreversible change.”

Evaporation of water to become water vapor is a reversible change as it can be condensed back to water whereas baking bread is irreversible change as baked bread can't be unbaked.

Hence the correct statements are:

Statement 1: Changes are the differences in the state of affairs.

Statement 2: Change can be grouped into reversible and irreversible change.

Statement 3: Change that can be undone is reversible change and change that can't be undone is irreversible change.

Statement 4: There are many ways in which change can be brought.

For e.g. Heating, cooling etc.


Chemistry

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