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Natural and Man-Made Changes

Identify the ...

Question

Identify the reversible change(s) among the following:
Change 1: Boiling of water
Change 2: Burning of wood
Change 3: Knitting a sweater

A

Only 3

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B

Only 1

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C

Both 1 and 2

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D

Both 1 and 3

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Solution

The correct option is D Both 1 and 3

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Similar questions

Q. Identify the reversible change/changes among the following:
Change 1 - Boiling of water
Change 2 - Burning of wood
Change 3 - Stretching of a rubber band

Q. Identify the burning of wood change shown in image.

Q. (a) Give the main difference between physical changes and chemical changes.
(b) Which of the following are chemical changes and which physical ? Give reason.
(i) a glass bottle breaking
(ii) coal burning in air
(iii) making a cake
(iv) wool being knitted into a sweater

Q. Give a reason, why?

A. Freezing of water is a reversible change while burning of a candle an irreversible change.

B. Change of seasons is a periodic change while the burning of weather is a non-periodic change.

Q. Classify the two changes given below. Change I: Cutting a log of wood into pieces Change II: Burning a log of wood

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Natural and Man-Made Changes

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