हिंदी

Give one example of change which occurs on heating but can be reversed.

Advertisements
Advertisements

प्रश्न

Give one example of change which occurs on heating but can be reversed.

एक पंक्ति में उत्तर
Advertisements

उत्तर

An iron rod’s heating is a reversible process.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Changes Around Us - Long Answer Questions [पृष्ठ ३५]

APPEARS IN

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

संबंधित प्रश्न

A stretched rubber band comes back to normal shape. It is an example for ________.


Differentiate reversible and irreversible reactions.


Water changes into ice on cooling is an example of ______.


What are reversible changes?


What are irreversible changes?


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?


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

Ice into water


Tearing of paper is said to be a change that cannot be reversed. What about paper recycling?


Give one example of change which occurs on mixing two substances, 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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×