Advertisements
Advertisements
Question
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
Solution
On immersing in hot water, the metal cap expands in size hence it can be removed easily.
APPEARS IN
RELATED QUESTIONS
Formation of curd from milk is
Magnet attracts iron needle.This is ______ change.
Evaporation of water is a reversible change.
Differences between
reversible and irreversible changes are:
An iron ring is heated. Which of the following statement about it is incorrect?
Salt can be separated from its solution (salt dissolved in water), because ______.
A piece of iron is heated till it becomes red-hot. it then becomes soft and is beaten to a desired shape. What kind of changes are observed in this process-reversible or irreversible?
A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.
Circle the odd one out. Give a reason for your choice.
Choose the odd one out. Give reason for your choice.
