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Give one example of change occurs on mixing two substances, but can be reversed. - Science

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प्रश्न

Give one example of change occurs on mixing two substances, but can be reversed.

एका वाक्यात उत्तर
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उत्तर

Formation of salt solution.

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पाठ 6: Changes Around Us - Long Answer Questions [पृष्ठ ३५]

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एनसीईआरटी एक्झांप्लर Science [English] Class 6
पाठ 6 Changes Around Us
Long Answer Questions | Q 15. (d) | पृष्ठ ३५

संबंधित प्रश्‍न

Chemical reactions are example for


Differentiate reversible and irreversible changes.


Magnet attracts iron needle.This is ______ change.


Analogy

Dissolution of glucose : reversible change :: Digestion of food: ___________ change


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


Give examples to explain the difference between changes that can or cannot be reversed.


Which is reversible change?


Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?


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.


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