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Rolling of chapati and baking of chapati are the changes that - Science

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प्रश्न

Rolling of chapati and baking of chapati are the changes that

पर्याय

  • can be reversed

  • cannot be reversed

  • can be reversed and cannot be reversed, respectively

  • cannot be reversed and can be reversed, respectively.

MCQ

उत्तर

can be reversed and cannot be reversed, respectively

Explanation -

Rolling of chapati is a physical reversible change because there is no change in the properties of kneaded flour. Once the chapati is baked it cannot be reversed.

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पाठ 6: Changes Around Us - Multiple Choice Questions [पृष्ठ ३३]

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एनसीईआरटी एक्झांप्लर Science [English] Class 6
पाठ 6 Changes Around Us
Multiple Choice Questions | Q 6. | पृष्ठ ३३

संबंधित प्रश्‍न

Long Answer Type Question:
How does curd being set? Is this change reversible?


Analogy

Curdling of milk : irreversible change :: Formation of clouds : ________change


Differentiate reversible and irreversible reactions.


Water on ______ changes to ice and on ______ comes back to water.


Which of the following changes cannot be reversed?

  1. Blowing of a balloon
  2. Folding paper to make a toy aeroplane
  3. Rolling a ball of dough to make roti
  4. Baking cake in an oven
  5. Drying a wet cloth
  6. Making biogas from cow dung
  7. Burning of a candle

Give one example of change which occurs on heating but cannot be reversed.


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.
  5. Her father made dough balls.
    Mother rolled the dough balls to make puries.
  6. Mother heated oil in a pan.
  7. Father fried the puries in hot oil.

Identify the activities at Paheli’s home as those that can be reversed and those which cannot be reversed.

 

Find the odd one out and give reason for your choice.


Circle the odd one out. Give a reason for your choice.


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


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