oly class-7 science set-2 – The Smart Visions

Created on April 02, 2025

Olympiad Class-7 Science Set-2

NameEmailPhone NumberSelect Level / Class

1 / 25

Which part of the clinical thermometer
contains mercury?

A) The cap

B) The tube

C) The bulb

D) The scale

2 / 25

Which phenomenon explains why it is
cooler at the seaside during the day?

A) Land breeze

B) Conduction

C) Radiation

D) Sea breeze

3 / 25

What is the purpose of the kink in a clinical
thermometer?

A) To increase the accuracy of the reading

B) To prevent mercury from rising too high

C) To prevent mercury from falling back

D) To keep the thermometer straight

4 / 25

What device is used to measure
temperature?

A) Hygrometer

B) Calorimeter

C) Barometer

D) Thermometer

5 / 25

What type of heat transfer is experienced
when you feel the heat from a fire without
touching it?

A) Reflection

B) Radiation

C) Convection

D) Conduction

6 / 25

Which scale is used in India for measuring
temperature as mentioned in the NCERT
textbook?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Rankine

7 / 25

What is advised to wear in summer to keep
cool?

A) Dark coloured clothing

B) Thermal wear

C) Light coloured clothing

D) Tight clothing

8 / 25

Why should a clinical thermometer not be
used to measure high temperatures?

A) It is not accurate enough

B) It can break easily

C) It can melt

D) It does not have a high enough range

9 / 25

What is an insulator?

A) A material that allows heat to pass through easily

B) A material that does not allow heat to pass through easily

C) A device used to measure temperature

D) A type of thermometer

10 / 25

Which material is a poor conductor of heat?

A) Aluminium

B) Iron

C) Copper

D) Wool

11 / 25

How do insectivorous plants obtain
nutrients?

A) Through photosynthesis

B) From the soil

C) From the insects they trap

D) From water

12 / 25

Why do people living in coastal areas
experience sea breezes?

A) The land heats up and cools down more quickly than the sea

B) The sea is always cooler than the land

C) The sea absorbs heat more quickly than the land

D) The land is hotter during the night

13 / 25

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

A) Compression

B) Radiation

C) Conduction

D) Convection

14 / 25

What causes convection currents in water?

A) All parts of the water heating up at the same rate

B) Hot water rising and cold water sinking

C) Water heating up uniformly

D) Cold water rising to the surface

15 / 25

What is the primary reason woollen clothes
keep us warm?

A) They are tightly woven.

B) They are made from animal fibres.

C) They trap air

D) They are thick

16 / 25

What prevents the mercury level from
falling in a clinical thermometer when
removed from the mouth?

A) The glass tube

B) The bulb

C) The kink

D) The scale

17 / 25

What phenomenon explains why hot water
rises?

A) Radiation

B) Conduction

C) Convection

D) Expansion

18 / 25

Which material is considered a good
conductor of heat?

A) Copper

B) Plastic

C) Wood

D) Wool

19 / 25

What is a land breeze?

A) Air moving from the sea to the land

B) Hot air rising over the sea

C) Cool air moving from the land to the sea at night

D) Warm air moving from the land to the sea

20 / 25

What is the normal body temperature in
Celsius?

A) 35⁰C

B) 30⁰C

C) 42⁰C

D) 37⁰C

21 / 25

Why are light-coloured clothes more
comfortable in the summer?

A) They do not absorb heat

B) They absorb more heat

C) They reflect most of the heat

D) They are generally looser

22 / 25

Heat transfer that does not require a
medium is called?

A) Radiation

B) Reflection

C) Conduction

D) Convection

23 / 25

What does a sea breeze bring?

A) Moisture from the sea

B) Cool air from the sea during the night

C) Warm air from the sea during the day

D) Hot air from the land

24 / 25

What happens to the water at the bottom of
a flask when heated from below?

A) It evaporates

B) It condenses

C) It rises

D) It cools down

25 / 25

Which type of clothes do we prefer to wear
in summer according to NCERT?

A) Light-coloured

B) Dark-coloured

C) Woolen

D) Thick

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