Physical and Chemical Changes-Physical Changes (CBSE Class-7 Science): Questions 1 - 3 of 3

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Question number: 1

» Physical and Chemical Changes » Physical Changes » Introduction to Physical Changes

MCQ▾

Question

A change whereby only the physical properties of a substance undergo a change is called as:

Choices

Choice (4) Response

a.

Endothermic reaction

b.

Physical change

c.

Chemical change

d.

Exothermic reaction

Question number: 2

» Physical and Chemical Changes » Physical Changes » Introduction to Physical Changes

MCQ▾

Question

Examples of physical changes are:

Choices

Choice (4) Response

a.

Dissolution of sodium chloride

AND

Electric current on the filament of electric bulb and heater

b.

Stretching of rubber band

c.

Interchanging of three states of matter

d.

All a. , b. and c. are correct

Question number: 3

» Physical and Chemical Changes » Physical Changes » Properties of Physical Changes

MCQ▾

Question

Characteristics of physical changes are:

Choices

Choice (4) Response

a.

No loss or gain of energy takes place

AND

No change in mass occurs

b.

No formed new substance

c.

Reversible and temporary

d.

All a. , b. and c. are correct

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