MCQ Questions

Question No. 1

Rusting of iron is a ________.

Answer :

periodic process

fast process

natural process

reversible process

Question No. 2

When ice melts into water what types of changes do you observe?

Answer :

Physical changes

Chemical changes

Irreversible changes

None of these

Question No. 3

Which of the following changes can be reversed?

Answer :

Raw egg to boiled egg

Wet clothes to dry clothes

Bud to flower

Cow dung to biogas

Question No. 4

A chemical change may bring:

Answer :

evolution of gas

change in colour

change in taste

All of these

Question No. 5

Which one of the steps while burning a candle is not reversible?

Answer :

Melting of solid wax

Liquid wax changes to vapou

Wax vapour burns into flame

All of these

Question No. 6

A chemical change may bring:

Answer :

evolution of gas

change in colour

change in taste

All of these

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