Which of the following change is irreversible in nature?

Frying a Puri

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knitting sweater

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Dissolution of sugar in water

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Melting of candle wax

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Solution

The correct option is A Frying a Puri
Frying a puri is an example of irreversible change. While frying the puri, its chemical properties change and cannot be reversed.
Whereas in all other options, the change can be reversed.

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Similar questions

Q. Why is the burning of a candle considered to be an irreversible change, even though we get back the wax after cooling it?

Q. Which of the following are physical changes and which are chemical changes ?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.

When wax is burnt (in the form of a wax candle), then water and carbon dioxide are formed.This shows the "change in state" characteristic of reactions.

Question 1

Which of the following is a physical change?
(a) Rusting of iron
(b) Combustion of magnesium ribbon
(c) Burning of candle
(d) Melting of wax

Q. Which of the following will result in a chemical change?
(a) mixing salt and water
(b) heating candle wax
(c) adding curd to milk
(d) adding water to milk

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Which of the following change is irreversible in nature?

The correct option is A Frying a PuriFrying a puri is an example of irreversible change. While frying the puri, its chemical properties change and cannot be reversed. Whereas in all other options, the change can be reversed.

The correct option is A Frying a Puri
Frying a puri is an example of irreversible change. While frying the puri, its chemical properties change and cannot be reversed.
Whereas in all other options, the change can be reversed.