मराठी

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

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प्रश्न

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?

कारण सांगा
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उत्तर

On immersing in hot water, the metal cap expands in size hence it can be removed easily.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Changes Around Us - Very Short Answer Questions [पृष्ठ ३४]

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एनसीईआरटी एक्झांप्लर Science Exemplar [English] Class 6
पाठ 6 Changes Around Us
Very Short Answer Questions | Q 10. | पृष्ठ ३४

संबंधित प्रश्‍न

Very Short Answer Type Question:
Give two examples of reversible changes.


Very Short Answer Type Question:
Give two examples of irreversible changes.


Differentiate reversible and irreversible reactions.


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


Pick the change that can be reversed from the following.


Can we reverse the following change? If yes, suggest the name of the method.

Water into water vapour


Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.


Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can 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.


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


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