Question # 1

What is the effect of polluted air on environment

Choose an answer

Ozone

Acid rain

Global warming

Smog

Synthetic organic pesticides formulated nowadays are more then:

Choose an answer

One thousand

Ten thousand

Two thousands

Twenty thousand

Which of the following is not a heavy industry?

Choose an answer

Iron

Fertilize

Paper

None

Water is purified by:

Choose an answer

Filtration

aeration

coagualation

All of these

Troposphere extends upto km:

Choose an answer

0-15 km

10-15 km

15-40 km

Chloroform is carcinogenic:

Choose an answer

Heart

Lungs

Liver

Kidney

The Catalyst used in the contact tower for the manufacture of H₂SO₄ is easily poisoned by:

Choose an answer

Nitrous oxide

Nitrogen gas

Arsenic oxide

Carbon dioxide

Leaching of nutrients is due to

Choose an answer

Drying of soil

Combustion of soil

Acidification of soil

Neutralization of soil

Which is not the condition for the formation of smog

Choose an answer

there must be sufficient NO gas

there must be sunlight to help photo chemical reactions to take place

air must be blowing swifty

there must be SO₂in the air

Chose a point which is not included in the components of environment

Choose an answer

Stratosphere

Hydrosphere

Lithosphere

Biosphere

Electropositive character increases down the groups due to:

Choose an answer

Increase in atomic size of the elements

Decrease in ionization potential

Decreases in electromagnetically of the element

All the above

Which of spectral lines when atoms are subjected to strong electric field is called:

Choose an answer

Compton effect

Stark effect

Zeeman effect

Photoelectric effect

The pH of the rain water in areas where acid rain is the cause of pollution may be

Choose an answer

6.5

5.6

4.5

2.2

Ozone gas has boiling point:

Choose an answer

Low

High

Medium

Highest

Biological oxygen demand (BOD) is associated with

Choose an answer

Organic matter

Micro organisms

Both a and b

None

Poisoning of CO can be reveresed by giving oxygen at pressure:

Choose an answer

low

least

medium

High

Which not a method for solid waste management>

Choose an answer

Landfill

Incinerating

Recycling

None of these

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

Choose an answer

Ionic bonding

Metallic bonding

Bridge bonding

H-bonding

Increased awareness of environmental issues has led chemists to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn. Which one is not the guiding principle

Choose an answer

Avoid waste production

Use no solvent

Use a catalyst

Devise a multistep procedure for synthesis of new compounds

Contamination of water of tanning industries is due to:

Choose an answer

Cr(III)

Cr(VI)

Mn(III)

Mn(VII)

Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil

Choose an answer

diffusion

convection

electrophoresis

chromatography

More Classes

Other Links

MDCAT Chemistry Chapter 21 Environmental Chemistry 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

Choose an answer