Environmental Chemistry MCQ

Test your knowledge with important Environmental Chemistry MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Environmental Chemistry MCQs at Bissoy

Which one of the following is not included in the National Air Quality Index?

ক
Sulphu

খ
Nitrogen dioxide

গ
Lead

ঘ
Methane
Smog can be controlled by

ক
use of catalytic converters in automobiles

খ
setting the air-fuel ratio in engine in a such away to produce some CO and unburned hydrocarbons

গ
both of the above

ঘ
none of the above
Which one of the following is the most appropriate and correct practice from the point of view of a healthy environment?

ক
Burning of plastic wastes to keep the environment clean

খ
Burning of dry fallen leaves in a garden or field

গ
Treatment of domestic sewage before its release

ঘ
Use of chemical fertilisers in agricultural fields
Which one of the following statements about temperature is correct?

ক
Temperature decreases with height in the stratosphere

খ
Temperature is constant at different heights in the stratosphere

গ
Temperature increases with height in the troposphere at an average rate of 6.5°C per km

ঘ
Temperature decreases with height in the troposphere at an average rale of 6.4°C per km
Which of the following recycling is the disassembly and separation of components and raw materials of electronics?

ক
Computer recycling

খ
electronic recycling

গ
Both A and B

ঘ
None of the above
Which one of the following group of gases contribute to the 'Green House Effect'?

ক
Carbon dioxide and Methane

খ
Ammonia and Ozone

গ
Carbon monoxide and Sulphur dioxide

ঘ
Carbon tetrafluoride and Nitrous oxide
Consider the following assertion and reason and select the correct answer: Assertion (A) Ozone kills microorganism in water. Reason (R) Ozone is not radioactive.

ক
Both A and R are true and R is the correct explanation of A

খ
Both A and R are true, but R is not the correct explanation of A

গ
A is true, but R is false

ঘ
A is false, but R is true
Acid rain is specified when pH is

ক
below 7

খ
below 5.6

গ
above 7

ঘ
above 9
Sullage water is-

ক
waste water released from kitchen

খ
waste water released from toilets

গ
waste water released from factories

ঘ
waste water released from hospitals
. . . . . . . . is a by product of sewage treatment and can be decomposed to produce biogas.

ক
Sewage

খ
Sludge

গ
Sewer

ঘ
Scum
The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is

ক
stratosphere

খ
troposphere

গ
mesosphere

ঘ
hydrosphere
Pesticides and herbicides are main source of

ক
water pollution

খ
air pollution

গ
soil pollution

ঘ
none of the above
Which one of the following is not a 'Green house gas'?

ক
Chlorofluorocarbons

খ
Methane

গ
Carbon dioxide

ঘ
Nitrogen
Which of the following gas composition is wrong?

ক
78% nitrogen

খ
21% oxygen

গ
0.03 - 0.05% CO2, argon

ঘ
None of the above
Which region of atmosphere has human beings alongwith other organism?

ক
Stratosphere

খ
Troposphere

গ
Hydrosphere

ঘ
Mesosphere
Which of the following is an inorganic gaseous pollutant of air?

ক
Phosgene

খ
Hydrogen cyanide

গ
Hydrogen sulphide

ঘ
Methane
Ozone layer of upper atmosphere is being destroyed by which of the following?

ক
Sulphur dioxide

খ
Photochemical oxidants

গ
Chlorofluorocarbons

ঘ
Smog
Smog is essentially caused by the atmospheric presence of

ক
Oxygen and ozone

খ
Ozone and nitrogen

গ
Oxygen and nitrogen

ঘ
Oxide of nitrogen and sulphur
Which is not the constituents of photo chemical smog?

ক
RCHO

খ
RCOR

গ
PAN

ঘ
CF2Cl2
Eutrophication of water body results from

ক
submersing idols in the water body

খ
depletion of oxygen

গ
enhanced growth of algae or algal blooms

ঘ
high amounts of nitrogenous nutrients and orthophosphates
Which of the following is/are example(s) of herbicides?

ক
Sodium chlorate

খ
Sodium arsenite

গ
Potassium Manganate

ঘ
Both A and B
Which of the following are hazardous to the environment because they deplete ozone layer leading to the formation of ozone hole?

ক
CO2

খ
Cl2

গ
CFCs

ঘ
O3
Which reaction is not a part of Acid-rain?

ক
CO2 + H2O ⟶ H2CO3

খ
SO3 + H2O ⟶ H2SO4

গ
NO2 + O2 + H2O ⟶ HNO3

ঘ
ClONO2 + H2O ⟶ HOCl + HNO3
Secondary pollutants can be

ক
PAN

খ
O3

গ
Cl

ঘ
All of these
Which one of the following is a cause of acid rains?

ক
Ozone

খ
Ammonia

গ
Sulphur dioxide

ঘ
Carbon monoxide
Which of the following is/are correct method to produce electricity from garbage?

ক
Garbage is burnt in open air

খ
Garbage is cultured with bacteria and produce methane

গ
Garbage is put in a electrolytic cell

ঘ
Both B and C
Which disinfectant cannot be used in drinking water?

ক
Potassium permanganate

খ
Bleaching powder

গ
Phenol

ঘ
Chlorine
To meet its rapidly growing energy demand, some opinion that india should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium? 1. Thoriumis farmore abundant in nature than uranium. 2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium. 3. Thorium produces less harmful waste compared to uranium. Which of the statements given above is/are correct?

ক
Only 1

খ
2 and 3

গ
1 and 3

ঘ
1, 2 and 3
With reference to Eutrophication, which of the following statements is/are correct? 1. It is a phenomenon of nutrient enrichment of a water body. 2. It depletes dissolved oxygen of the water. Select the correct answer:

ক
Only 1

খ
Only 2

গ
Both 1 and 2

ঘ
Neither 1 nor 2
Green Chemistry means

ক
the use of green vegetables in synthesis

খ
the use of chemicals with green colour

গ
use of very fast reactions

ঘ
use of environmentally bengin methods to synthesise compounds