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CLASS-7 SCIENCE REVISION

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which of the following organisms belong to saprotrophs?

a)

Algae

b)

Fungi

c)

Vulture

d)

Bacteria

2.

Largest gland in our body is

a)

Skin

b)

Heart

c)

Liver

d)

Lungs

3.

Which of the following is not a type of silk?

a)

Mulberry silk

b)

Tassar silk

c)

Mooga Silk

d)

Moth Silk

4.

Which of the following is not a method of heat transfer?

a)

Conduction

b)

Induction

c)

Covection

d)

Radiation

5.

Identify the process:

a)

Shearing

b)

Scouring

c)

Combing

d)

Sorting

6.

Sodium hydroxide and Hydrochloric acid reacts to form

a)

Sodium Chloride

b)

Sodium

c)

Hydrogen gas and Chlorine gas

d)

Sodium hypochlorite

7.

How crystals of pure substances are formed?

a)

Crystallization

b)

Chromatography

c)

Peptization

d)

All of the above

8.

Which of the following is generally not predicted in daily weather report?

a)

Temperature

b)

Pressure

c)

Humidity

d)

Rainfall

9.

Which of the following is not true?

a)

Air exerts pressure

b)

Air can be compressed

c)

Air move from low pressure area to high pressure area

d)

Air is not affected by temperature.

10.

Which of the following is not an adaptive feature in polar bear?

a)

White fur

b)

Strong sense of smell

c)

Long curved and sharp claws

d)

Long tail