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Look at the figure which shows three situations. Which of these shows a reversible change and why? - Science

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Question

Look at the figure which shows three situations.

Which of these shows a reversible change and why?

Options

  • A burning candle

  • An extinguished candle

  • Melting wax

MCQ
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Solution

Melting wax


Explanation:

Melted wax can be changed into its solid or viscous state on cooling. Therefore, it is a reversible change.

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Chapter 6: Changes Around Us - Very Short Answer Questions [Page 34]

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NCERT Exemplar Science [English] Class 6
Chapter 6 Changes Around Us
Very Short Answer Questions | Q 8. | Page 34

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While lighting a candle, Paheli observed the following changes.

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  4. Melted wax was getting solidified.

Of the above, the changes that can be reversed are


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lt was Paheli’s birthday, her brother Simba was helping her to decorate the house for the birthday party and their parents were also busy making other arrangements. Following were the activities going on at Paheli’s home:

  1. Simba blew balloons and put them on the wall.
  2. Some of the balloons got burst.
  3. Paheli cut colourful strips of paper and put them on the wall with the help of tape.
  4. She also made some flowers by origami (paper folding) to decorate the house.
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  6. Mother heated oil in a pan.
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Identify the activities at Paheli’s home as those that can be reversed and those which cannot be reversed.


Choose the odd one out. Give reason for your choice.


Choose the odd one out. Give reason for your choice.


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