Question

std 7th science lesson 13 :- give 4 examples of irreversible changes​

Answer 1

Irreversible changes :

• Cooking food
• Burning wood
• Age
• Photosynthesis

Answer 2

Answer:

Burning. Burning is an example of an irreversible change. When you burn wood you get ash and smoke. You cannot change the ash and smoke back to wood again.

Explanation:

Some examples of irreversible changes are burning of paper, Burning of fuels (like Wood, Coal and LPG), Cooking of food, Rusting of iron , Grinding of wheat grains into flour, Baking of chapatti (roti), Growth of a plant, Formation of flower from bud, Falling of leaves from a tree, Ripening of fruits, Ageing of man and .