All physical changes are reversible and only chemical changes are irreversible. Do you agree? Justify your answer. (2m)
iii) Ravi didn’t take his cycle for so long as it was raining continuously. Then he saw that Kavin was painting his cycle. Ravi became so upset after seeing the cycle from the garage and so went to Kavin to get few suggestions to recover his cycle as it was looking very old. How could Kavin help Ravi to recover his cycle?
answer quick pls i give 100 points
Answers
Answer: No only chemical changes are not irreversible, physical changes are also reversible. For example - When ice melts and changes into water which is a physical change and it can be reversed as water can change back to ice on cooling.
Kavin could tell Ravi to paint his cycle so that it doesn't get rusted.
He could change the Chain and oil them regularly.
these are a few tips Kevin could tell to Ravi so that his cycle does not get rusted.
Answer:
No, all physical changes are not irreversible. Some of the best examples include cutting trees, cutting vegetables etc. As chemical changes cannot be reversed back, they are always irreversible. But in some cases, chemical changes can be reserved such as removing trash from copper with vinegar. But it is true that the chemical reactions or changes can be reserved, but the changes of their composites are irreversible.
he can replace its chain , paint it , change breaks , change tyres, do oiling , change screws and bolds
In this way, he can make the cycle clean and neat