Which of the following is not achemical change?

NDA / Chemistry 🧪 Lesson 01 PHYSICAL AND CHEMICAL CHANGES. practice exercise

1. Which of the following is a true statement about the physical change?

a) Physical changes are temporary changes and can be reversed

(b) During physical changes the

Composition of constituents molecule

changes.

(C) Energy is absorbed or released

during a physical change

(d) ldentity of the substance is lost after

the physical change

2. Which of the following is not a

chemical change?

(a) Combustion of fuel

(b) Electrolysis of acidified water

(c) Oxidation reaction of cells at anode

(d) Glowing of a platinum wire

3. Which of the following is a physical

change?

(a) Oxidation

(b) Reduction

(c) Both (a) and (b) 

(d)None of these

4. Which of the following is a physical

change'?

(a) Formation of curd

(b) Burning of candle

(c) Rusting of iron rod

(ey Heating of copper wire by electricity

5. Which of the following is a chemical

change?

(a) Heating of iron to red hot

(b) Magnetisation of iron piece

(c) Rusting of iron

(d) All of the above

.

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