POLLUTION  OF AIR AND WATER

POLLUTION OF AIR AND WATER

8th Grade

16 Qs

quiz-placeholder

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POLLUTION  OF AIR AND WATER

POLLUTION OF AIR AND WATER

Assessment

Quiz

Chemistry

8th Grade

Hard

Created by

Hana Arakkal

Used 7+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which of the following Chemicals cause pollution by damaging the Ozone layer ?

Nitrogen oxides

Hydrochlorofluorocarbons

Carbon dioxide

Chlorofluorocarbons

2.

FILL IN THE BLANK QUESTION

10 sec • 1 pt

Air is a ________ of many gases that are present in a fixed ratio.

3.

FILL IN THE BLANK QUESTION

10 sec • 1 pt

What method is suggested for removing suspended impurities from water?

 

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

How can industrial effluent be treated to remove toxic substances?

Boiling

Adding chlorine tablets

Chemical treatment

Filtration through muslin cloth


5.

FILL IN THE BLANK QUESTION

10 sec • 1 pt

What is the term used for making filtered water germ-free by boiling?

6.

MULTIPLE SELECT QUESTION

10 sec • 1 pt

Which chemical is mentioned for treating water to make it germ-free?

Bleaching powder

Potassium permanganate

Chlorine tablets

Sodium bicarbonate

7.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which action is recommended to prevent water pollution at an individual level?

Disposing garbage in rivers

Overusing pesticides and fertilizers


Saving and not wasting water

Ignoring laws for industrial units


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