Class 6 - Chemistry Set 1

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FREE quick assessment test (20 Questions) by Improove. Plz visit www.improove.in

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1. Purest form of coal is *

1 point

coke

wood charcoal

coal tar

all of these

2. Addition of salt in water results in the formation of *

1 point

Compound

Homogenous mixture

Heterogenous mixture

Element

3. Study the following changes and identify irreversible changes ? *

1 point

Weathering of rocks

Cooking of food

Falling of leaves from a tree

Curdling of milk

4. The envelope of air around the earth is called *

1 point

Ozone layer

Hemisphere

Atmosphere

All of these

5. Which of the following is an example of chemical property ? *

1 point

Rusting of Iron

Burning of coal

Hardening of cement

All of the above

6. Which of the method is used for separation of sand from oil ? *

1 point

Sedimentation & Decantation

Crystallization

Sublimation

Both (1) and (3)

7. Which of the following are made up of chemicals ? *

1 point

Shampoo

Soap

Medicines

All of the above

8. The right time to cut jute plants is *

1 point

matured stage

before flowering stage

flowering stage

any time after flowering

9. Which one of the following is/are property(ies) of smoke? *

1 point

Causes many respiratory diseases

Produced by burning of fuel

Contain some carbon particles

It is not harmful

10. Which of these is a physical property ? *

1 point

Colour

Shape

Size

All of these

11. Moving air is called *

1 point

thunderstorm

wind

blizzard

chinock

12. The liquid that passes through the filter paper is known as *

1 point

residue

coagulant

filtrate

sediment

13. Salt is obtained from seawater by process of *

1 point

Sedimentation

Decantation

Filtration

Evaporation

14. Classification of matter helps us to *

1 point

study things systematically.

share information with others.

know the properties of all the members of a group if we know about one.

All the above

15. If you add few drops of honey to beaker containing water, what will you observe ? *

1 point

Honey is heavier than water and sink in it.

Honey is lighter than water and sink in it.

Honey is heavier than water and floats on it.

Honey is lighter than water and floats on it.

16. How many of the following statements are correct ?<br>â€¢ The volume of water vapour is high in the sea coastal area.<br>â€¢ The volume of water vapour is low in the plateau region.<br>â€¢ In winter season, mist and fog are formed due to the presence of water vapour in air in excess.<br>â€¢ The temperature shows its effects on water vapour in air. *

1 point

17. Chemical changes are __________. *

1 point

temporary, reversible and a new substance is produced

always accompanied by exchange of light

permanent, irreversible and a new substance is produced

never accompanied by exchange of light and heat energy

18. The melting point of ice is *

1 point

0Â°C

37Â°C

4Â°C

100Â°C

19. Which property is common to all matter? *

1 point

Matter takes up space and has no mass.

Matter can be seen and has some mass.

Matter occupy space and has mass.

Matter takes up space and may or may not have mass.

20. Which of the following processes would not take place if oxygen was absent from air ? *

1 point

Combustion

Respiration

Oxidation

Solubility in water

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