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7th Sem 1 Science MCQs Quiz

Total questions: 19

Worksheet time: 10mins

Name
Class
Date
1.

Cuscuta is an example of:

a)

Autotroph

b)

Parasite

c)

Saprotroph

d)

Host

2.

The plant which traps and feeds on insects is:

a)

Cuscuta

b)

China Rose

c)

Pitcher Plant

d)

Rose

3.

Fat is completely digested in the:

a)

Stomach

b)

Mouth

c)

Small Intestine

d)

Large Intestine

4.

An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will:

a)

Flow from iron ball to water

b)

Not flow from iron ball to water or vice versa

c)

Flow from water to iron ball

d)

Increase the temperature of both

5.

A wooden spoon is dipped in a cup of ice cream. Its other end:

a)

Becomes cold by conduction

b)

Becomes cold by convection

c)

Becomes cold by radiation

d)

Does not become cold

6.

Stainless steel pans are usually provided with copper bottoms because:

a)

Copper bottom makes the pan more durable

b)

Such pans appear colorful

c)

Copper is a better conductor of heat than stainless steel

d)

Copper is easier to clean than stainless steel

7.

Water from the undigested food is absorbed mainly in the:

a)

Stomach

b)

Foodpipe

c)

Small Intestine

d)

Large Intestine

8.

Which part of the plant takes in carbon dioxide from the air for photosynthesis?

a)

Root Hair

b)

Stomata

c)

Leaf Veins

d)

Petals

9.

Plants take carbon dioxide from the atmosphere mainly through their:

a)

Roots

b)

Stem

c)

Flowers

d)

Leaves

10.

In plants, water is transported through:

a)

Xylem

b)

Phloem

c)

Stomata

d)

Root Hair

11.

Water absorption through roots can be increased by keeping the plants:

a)

In the shade

b)

In dim light

c)

Under the fan

d)

Covered with a polythene bag

12.

The gas we use in the kitchen is called liquefied petroleum gas (LPG). Choose the correct one:

a)

Process A is a chemical change

b)

Process B is a chemical change

c)

Both A and B are chemical changes

d)

None of these are chemical changes

13.

Anaerobic bacteria digest animal waste and produce biogas. The biogas is then burnt as fuel. Choose the correct one:

a)

Process A is a chemical change

b)

Process B is a chemical change

c)

Both processes A and B are chemical changes

d)

None of these processes is a chemical change

14.

No medium is required for transfer of heat by the process of:

a)

Conduction

b)

Convection

c)

Radiation

d)

None of these

15.

A cold steel spoon is dipped in a cup of hot milk. Heat is transferred to its other end by the process of:

a)

Conduction

b)

Convection

c)

Radiation

d)

None of these

16.

Clothes of (a)   colours absorb more heat better than clothes of light colours.

17.

Which of the following prevents rusting of iron?

a)

Painting

b)

Oiling

c)

Galvanization

d)

All of the above

18.

Why does wearing multiple layers of clothing in winter keep us warmer than a single thick layer?

a)

It traps more air

b)

It allows air to pass through

c)

It absorbs more heat

d)

It reflects sunlight

19.

Iron pipes coated with zinc do not get rusted easily.

a)

True

b)

False