हिंदी

Look at Figure which shows three situations. Which of these shows a reversible change and why? - Science

Advertisements
Advertisements

प्रश्न

Look at Figure which shows three situations.

Which of these shows a reversible change and why?

विकल्प

  • A burning candle

  • An extinguished candle

  • Melting wax

MCQ

उत्तर

Melting wax

The correct answer is option (c) the melting wax. Melted wax can be changed into its solid or viscous state on cooling. Therefore, it is a reversible change.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Changes Around Us - Very Short Answer Questions [पृष्ठ ३४]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science [English] Class 6
अध्याय 6 Changes Around Us
Very Short Answer Questions | Q 8. | पृष्ठ ३४

संबंधित प्रश्न

Short Answer Type Question:
What is a physical change? Explain with example.


Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.


Match the following.

Bud to flower Dr. A.P.J. Abdul Kalam
Reversible change Recyclable waste
India 2020 Organic waste
Paper Melting of ice
Vegetables Irreversible change

Differentiate reversible and irreversible changes.


When a candle is lit the following changes are observed.

  1. Wax melts.
  2. Candle keeps burning.
  3. The size of the candle decreases.
  4. The molten wax solidifies
  5. Which of the changes can be reversed? Justify your answer

The blackening of the Silver anklet is a (an) ______.


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


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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×