Advertisements
Advertisements
प्रश्न
Look at the figure which shows three situations.
Which of these shows a reversible change and why?
पर्याय
A burning candle
An extinguished candle
Melting wax
Advertisements
उत्तर
Melting wax
Explanation:
Melted wax can be changed into its solid or viscous state on cooling. Therefore, it is a reversible change.
APPEARS IN
संबंधित प्रश्न
What is reversible change?
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
Name the two types of changes.
Pick the change that can be reversed from the following.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
Which of the following changes cannot be reversed?
- Blowing of a balloon
- Folding paper to make a toy aeroplane
- Rolling a ball of dough to make roti
- Baking cake in an oven
- Drying a wet cloth
- Making biogas from cow dung
- Burning of a candle
Give one example of change which occurs on heating but cannot be reversed.
Circle the odd one out. Give a reason for your choice.
Circle the odd one out. Give reason for your choice.
