Characteristics of desirable and undesirable change — task. Chemistry CBSE Live product, Class 7 (2025-26).

Give the correct answer:

1. Which of the following change is physical and desirable?

Burning of paper
Burning of wax
Melting of wax
Burning of wood

2. Which of the following is a desirable chemical change?

Burning of paper
Spoiling of food
Freezing of juice
Digestion of food

Login or Fast registration

Exit to the topic

Did you find an error?