Advertisements
Advertisements
Question
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Advertisements
Solution
- Wax melting is a reversible change.
- “The molten wax solidifies” is a reversible change.
These two changes can be reversible to get back to the original state. So the above two changes are reversible changes.
APPEARS IN
RELATED QUESTIONS
Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.
An example for reversible change is
Magnet attracts iron needle.This is ______ change.
Changes which cannot be reversed are called ______.
Water on ______ changes to ice and on ______ comes back to water.
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.
Give one example of change which occurs on heating but cannot be reversed.
Choose the odd one out. Give a reason for your choice.
Select the odd one out. Give reason for your the choice
Choose the odd one out. Give a reason for your choice.
