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Chemistry CBSE Live product
Class 7
Changes around us: Physical and chemical changes
Reversible and irreversible changes
6.
Characteristics of desirable and undesirable change
Question:
2
m.
Pick out
the correct
answer:
1.
Which of the following change is both desirable and irreversible?
Melting of ice
Process of cooking food
Folding of clothes
Folding of paper
2.
The same change can be desirable or undesirable based on ________
harm
speed
damage
usefulness and benefits
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