Question # 1

The news paper can be recycled again and again as many times as

Choose an answer

5

3

4

2

Which is a secondary pollutant

Choose an answer

Carbonic acid

CO₂

SO₂

CO

In which layer of atmosphere, ozone is present.

Choose an answer

Thermosphere

Mesosphere

Stratosphere

Troposphere

The disease can be eradicated by using pesticides.

Choose an answer

Malaria

Yellow fever

Sleeping sickness

All of these

Peroxyacetyl nitrate (PAN) is a irritant to human beings and it affects

Choose an answer

Eyes

Ears

Stomach

Nose

The yellowish colour in photochemical smog is due to the presence of.

Choose an answer

NO

NO2

SO2

CO2

Ecosystem is a smaller unit of

Choose an answer

lithospher

hydroshper

atmosphere

biosphere

The avoid teh formation of toxic compounds with chlorine which substance is used for disinfecting water.

Choose an answer

KMnO4

O3

Alum

Chloramines

In water the concentration of dissolved O₂should be

Choose an answer

1-3 ppm

2-4 ppm

4-8 ppm

8-12 ppm

Which one of the followings is not a pollutant.

Choose an answer

CO2

NO2

CO

SO2

The pH of unpolluted rain water should be

Choose an answer

5.00

5.60

6.50

7.00

Ecosystem is smaller unit of

Choose an answer

Lithosphere

Hydroshpere

Amosphere

Biosphere

Acid rain fist of all was observed by

Choose an answer

Augus Smith

Robert Hook

Mosley

Watson

Thickness of the atmosphere is

Choose an answer

100 km

500 km

1000 km

1500 km

Photochemical smog mainly consist of

Choose an answer

Higher hydrocarbons

Oxidising agnts

Reducing agent

All of these

The normal amount of overhead ozone is.

Choose an answer

300 DU

350 DU

400 DU

450 DU

Water is disinfected by a substance to avoid toxification

Choose an answer

KMnO₄

Alums

O₃

Cl₂

Half mass of atmosphere gases is present in.

Choose an answer

5-6 km distance above the surface of earth

10 km above the surface

100 km above the surface

56 km above the surface

A quality of raw water is improved by

Choose an answer

Reduction

Aeration

Dehydration

Incineration

A single chloride free radical can destroy how many ozone molecules

Choose an answer

100

100,000

100,00

unlimited

More Classes

Other Links

Chemistry Fsc Part 2 Chapter 16 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer