Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
On immersing in hot water, the metal cap expands in size hence it can be removed easily.
APPEARS IN
संबंधित प्रश्न
A stretched rubber band comes back to normal shape. It is an example for ________.
Circle the odd one.
Differentiate reversible and irreversible reactions.
When ‘Touch me not’ plant is touched by us, ______ changes occur.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
Salt can be separated from its solution (salt dissolved in water), because ______.
Rolling of chapati and baking of chapati are the changes that ______.
Give one example of change which occurs on cooling but can be reversed.
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
Choose the odd one out. Give a reason for your choice.
