Water Filter Making Quiz

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What is the first step to make a water filter?

A

Use a sieve

B

Boil the water

C

Add chemicals

D

Gather materials like sand and gravel

Which material is used for filtration?

A

Cotton

B

Wood

C

Plastic

D

Sand

What should be at the bottom of the filter?

A

Cloth

B

Charcoal

C

Sand

D

Gravel

What is used to collect filtered water?

A

Container

B

Paper

C

Straw

D

Sponge

Which layer goes on top in a filter?

A

Gravel

B

Sand

C

Cloth

D

Charcoal

How should the filter be assembled?

A

Only one layer

B

Inverted order

C

Randomly mixed

D

Layered from coarse to fine

What is the purpose of charcoal?

A

Remove impurities

B

Change colour

C

Add flavour

D

Increase weight

What should you do before using the filter?

A

Add soap

B

Rinse all materials

C

Heat it

D

Leave it dry

What type of water can be filtered?

A

Dirty water

B

Pure distilled water

C

Ice

D

Salt water

How often should the filter be cleaned?

A

Regularly

B

Once a year

C

Never

D

Only when broken

What is an important safety step?

A

Use rusty materials

B

Mix with chemicals

C

Ensure all materials are clean

D

Skip cleaning

What can be added to improve taste?

A

Vinegar

B

Salt

C

Sugar

D

Activated charcoal

What should the top layer be?

A

Clean sand

B

Wood chips

C

Cloth

D

Gravel

Which container is best for filtering?

A

Cardboard box

B

Glass jar

C

Plastic bottle

D

Metal tin

What is a potential risk of DIY filters?

A

Too efficient

B

Too quick

C

Too expensive

D

Incomplete purification