Page 1 - 4.Home Assignment-Physical and Chemical Change

SAI International School
Subject-Chemistry

Ch-Is Matter around us pure?
Topic-Physical and Chemical Change
HOME ASSIGNMENT

OBJECTIVE QUESTIONS
Fill in the blank
Q1.Iron benches kept in lawns and gardens get ………………… . It is a
………………… change bacause a new ………………… is formed.
Q2. True/False
When a candle bums, both physical and chemical changes take place.
MCQs
Q3.Which of the following is a physical change? [NCERT Exemplar]
(a) Rusting of iron
(b) Combustion of magnesium ribbon
(c) Burning of candle
(d) Melting of wax
Q4.Which one of the following is a chemical change? [NCERT Exemplar]
(a) Twinkling of stars
(b) Cooking of vegetables
(c) Cutting of fruits
(d) Boiling of water

Q5. A chemical change may involve
(a) change in colour only
(b) change in temperature only
(c) evolution of gas only
(d) All of the above

Q6.Which of the following are true when milk changes into curd?
(i) Its state is changed from liquid to semi-solid.
(ii) It changes colour.
(iii) It changes taste.
(iv) The change cannot be reversed.
Choose the correct option.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i), (iii) and (iv)
(d) (i) to (iv)

Q7.Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which
of these facts is responsible for its long stability?
(a) It is more than 7 m high
(b) It weighs about 6000 kg
(c) It was built more than 1600 years ago
(d) It has not rusted after such a long period