हिंदी

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

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प्रश्न

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

एक पंक्ति में उत्तर
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उत्तर

Formation of salt solution.

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

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

संबंधित प्रश्न

Very Short Answer Type Question:
Some common changes are given in the below Table. Which of these changes do you think can be reversed?

Change Can be reversed
(i) Raw egg to boiled egg Yes/No
(ii) Batter to idli  
(iii) Wet clothes to dirty clothes  
(iv) Woollen yarn to knitted sweater  
(v) Grain to its flour  
(vi) Cold milk to hot milk  
(vii) straight string to a cold string  
(viii) Bud to flower  
(ix) Milk to paneer  
(x) Cow dung to biogas  
(xi) stretched rubber band to its normal size  
(xii) Melting of ice-cream  

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


What is reversible change?


Magnet attracts iron needle.This is ______ change.


Burning of match stick is a reversible change.


Which is reversible change?


Change is the ______ of a substance from one form to another. 


The burning of the paper is an irreversible change.


Give one example of change which occurs on heating but 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.


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