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Environmental Chemistry MCQ

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Environmental Chemistry MCQ. We covered all the Environmental Chemistry MCQ in this post for free so that you can practice well for the exam.

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MCQ on Environmental Chemistry for NEET Students

Acid rain in some industrial cities is due to the effect of atmospheric pollution caused by ……….

(A) excessive release of CO₂ by burning fuels like wood and charcoal, cutting off forests, etc.

(B) excessive release of NO₂ and SO₂ in the atmosphere by the burning of fossil fuels

(C) excessive release of NH3 by industrial plants and coal gas

(D) excessive release of CO in the atmosphere by incomplete combustion of coke, charcoal, and other carbonaceous fuel in the presence of oxygen

Option b – excessive release of NO₂ and SO₂ in the atmosphere by the burning of fossil fuels

The ozone layer is present in which of the following region(s) of the atmosphere? (i) Stratosphere (ii) Hydrosphere (iii) Mesosphere (iv) Troposphere

(A) Both (i) and (ii)

(B) Both (i) and (iv)

(C) Both (ii) and (iii)

(D) Only (i)

Option d – Only (i)

Leakage of which of the following gas from the Union Carbide plant in Bhopal led to the most disastrous gas tragedy?

Which State of India experiences the maximum annual variation of rainfall?

(A) Meghalaya

(B) Kerala

(C) Rajasthan

(D) West Bengal

Show Answer

(A) Carbon monoxide

(B) Phosgene

(C) Sulphur dioxide

(D) Methyl isocyanate

Option d – Methyl isocyanate

Which one among the following metals interferes with the development and maturation of red blood cells?

(A) Iron

(B) Lead

(C) Copper

(D) Zinc

Option b – Lead

Which of the following is an excellent green solvent as well as a greenhouse gas?

Pakyong Airport is located in?

(A) Sikkim

(B) Jammu and Kashmir

(C) Arunachal Pradesh

(D) Mizoram

Show Answer

(A) Freons

(B) Methanol

(C) CO

(D) CO₂

Option d – CO₂

Which of the following statements is NOT CORRECT regarding the greenhouse effect?

(A) It is due to the high concentration of CO₂ in the atmosphere.

(B) It is influenced by gases such as CH4, O3, and chlorofluorocarbons.

(C) It is responsible for the increasing temperature of the earth.

(D) It is responsible for lowering the level of oceans due to high evaporation.

Option d – It is responsible for lowering the level of oceans due to high evaporation.

………. do not release oxides of nitrogen in the atmosphere.

(A) Bacterial decay of organic matter by soil micro-organisms

(B) Action of aerobic and anaerobic bacteria on fertilizers

(C) Volcanic eruptions

(D) Combustion of fuel at high temperature

Option c – Volcanic eruptions

When fertilizers containing phosphates enter into water bodies, it causes ……….

(A) enhanced growth of algae

(B) increase in the amount of dissolved oxygen in the water

(C) deposition of calcium phosphate

(D) increase in the fish population

Option a – enhanced growth of algae

SO₂ causes ……….

(A) respiratory and lung diseases

(B) acid rain

(C) corrosion of building materials

(D) all of these

Option d – all of these

Chlorofluorocarbon releases which of the following radicals or compounds that lead to the destruction of ozone?

(A) Fluorine radical

(B) Chlorine radical

(C) Nitrogen dioxide

(D) Carbon dioxide

Option b – Chlorine radical

Photochemical smog can be controlled by which of the following methods? (i) Plantation of plants like Pinus. (ii) Controlling the release of CO2, SO₂, and smoke. (iii) Controlling the release of NO₂ hydrocarbons, ozone, etc. (iv) Use of catalytic converters in automobiles.

(A) Only (i), (iii), and (iv)

(B) Only (ii) and (iv)

(C) Only (i) and (iv)

(D) All of these

Option a – Only (i), (iii), and (iv)

Which of the following is used as a green solvent for dry cleaning purposes?

(A) Polychlorinated biphenyls

(B) Liquid CO₂

(C) Ethanal

(D) Tetrachloroethene

Option b – Liquid CO₂

……… are responsible for the greenhouse effect.

(A) UV rays

(B) Infrared rays

(C) Green plants

(D) Gamma rays

Option b – Infrared rays

Which of the following leads to an increase in BOD?

(A) Purification of water using oxidants

(B) Decrease of organic matter in water

(C) Release of a large quantity of sewage into water

(D) Both (A) and (B)

Option c – Release of a large quantity of sewage into water

Choose the CORRECT pair.

(A) CO₂-Carcinogenic

(B) SO₂-Retard the rate of photosynthesis

(C) Hydrocarbons – Ageing of plants

(D) NO₂ – Leads to suffocation by binding with hemoglobin

Option c – Hydrocarbons – Ageing of plants

Which of the following statement is INCORRECT about classical smog?

(A) It contains smoke, fog, and sulphur dioxide

(B) It is produced in cold and humid climates.

(C) It contains compounds of a reducing nature.

(D) Its main components are produced by the action of sunlight on emissions from automobiles and factories.

Option d – Its main components are produced by the action of sunlight on emissions from automobiles and factories.

Which of the following is NOT classified under non-biodegradable wastes?

(A) Sewage

(B) Pesticides

(C) Plastic

(D) Mercury

Option a – Sewage

………. is NOT a particulate pollutant.

(A) Ozone

(B) Fume

(C) Mist

(D) Smoke

Option a – Ozone

………. is the major source that releases carbon monoxide into the air.

(A) Respiration of living organisms

(B) Photosynthesis carried out by plants

(C) Vehicular exhaust

(D) Decay of dead organisms

Option c – Vehicular exhaust

The lowest layer of the atmosphere is known as ………

(A) stratosphere

(B) troposphere

(C) mesosphere

(D) hydrosphere

Option b – troposphere

What is DDT among the following?

(A) Radioactive pollutant

(B) A fertilizer

(C) Biodegradable pollutant

(D) Non-biodegradable pollutant

Option a – Radioactive pollutant

Gases that are referred to as “greenhouse gases” are ……..

(A) CO2, O3, NO2, NH3

(B) chlorofluorocarbons, CO2, SO2, NO2

(C) CH4, N2, CO2, NH3

(D) chlorofluorocarbons, CO2, CH4, N₂O

Option d – chlorofluorocarbons, CO2, CH4, N₂O

Decolourization of leaves is due to ………

(A) bleaching by chlorine

(B) reduction by chlorofluorocarbons

(C) bleaching by sulphur dioxide

(D) oxidation by CO₂

Option c – bleaching by sulphur dioxide

Which among the given pair of gases is responsible for the destruction of the ozone layer?

(A) CO, SO2

(B) NO, NO2

(C) N2, O2

(D) SO2, SO3

Option b – NO, NO2

Which of the following is NOT a measure to control environmental pollution?

(A) Biological oxidation of organic wastes by micro-organisms.

(B) Use of CNG as an alternative to petrol and diesel.

(C) Avoiding the use of biodegradable materials.

(D) Use of catalytic converters in automobiles.

Option c – Avoiding the use of biodegradable materials.

Classical smog is a mixture of ……….

(A) fumes, fog, and NO₂

(B) smoke, dust particles, and SO₂

(C) mists, smoke, and fog

(D) fumes, smoke, and mists

Option b – smoke, dust particles, and SO₂

Which of the following statement is INCORRECT?

(A) Acid rain enhances the activity of symbiotic nitrogen-fixing bacteria.

(B) The ions present in acid rain leach nutrients from the soil.

(C) Acid rain may cause neurological disorders in human beings.

(D) Change in the pH of water bodies due to acid rain adversely affects aquatic life.

Option a – Acid rain enhances the activity of symbiotic nitrogen-fixing bacteria.

Which of the following is NOT a constituent o t of photochemical smog?

(A) Acrolein

(B) Peroxyacetyl nitrate

(C) Hydrogen sulphide

(D) Ozone

Option c – Hydrogen sulphide

Another name for chlorofluorocarbons is ………

(A) freons

(B) acrolein

(C) peroxyacetyl nitrate

(D) ferrocene

Option a – freons

High concentrations of fluoride ions in drinking water may lead to which of the following condition/disease?

(A) Methemoglobinemia

(B) Scurvy

(C) Fluorosis

(D) Goitre

Option c – Fluorosis

Which of the following is an example of a primary air pollutant?

(A) NO

(B) HNO3

(C) NO₂

(D) H₂O₂

Option a – NO

Which of the following is NOT a primary air pollutant?

(A) SO₂

(B) CO

(C) O3

(D) NO2

Option c – O3

Which are the primary constituents of photochemical smog?

(A) SO₂ and CO

(B) NO₂ and hydrocarbons

(C) CO₂ and NO₂

(D) Hydrocarbons and CFCs

Option b – NO₂ and hydrocarbons

The molecular formula of PAN is ……….

(A) CH3-COONO2

(B) CH3-COO₂NO₂

(C) H-COONO₂

(D) CH₂=CH-CH=0

Option b – CH3-COO₂NO₂

Which of the following property of synthetic reactions are preferably carried water, out in an aqueous medium? (i) Low specific heat (ii) Low volatility (iii) High specific heat (iv) High volatility

(A) (i) and (ii)

(B) (i) and (iv)

(C) (ii) and (iv)

(D) (ii) and (iii)

Option d – (ii) and (iii)

Which of the following does NOT cause air pollution?

(A) Thermal power plant

(B) Automobile

(C) Nuclear power plant

(D) Hydroelectric power plant

Option d – Hydroelectric power plant

Increased concentration of CO₂ in the atmosphere is responsible for ………..

(A) greenhouse effect

(B) acid rain

(C) reduced rate of photosynthesis

(D) death of aquatic life

Option a – greenhouse effect

Which of the following is a type of viable particulate?

(A) moulds

(B) smoke

(C) dust

(D) mists

Option a – moulds

Classical smog and photochemical smog are also known as ……… and ……….. smog respectively.

(A) oxidizing, reducing

(B) physical, chemical

(C) reducing, reducing

(D) reducing, oxidizing

Option d – reducing, oxidizing

Depletion of the ozone layer may eventually lead to ………. (i) cardiovascular disorder (ii) killing of phytoplanktons (iii) skin cancer (iv) aging of the skin

(A) Only (ii) and (iv)

(B) Only (iii) and (iv)

(C) Only (ii), (iii), and (iv)

(D) Only (ii) and (iii)

Option c – Only (ii), (iii) and (iv)

Which of the following leads to the production of CO₂? ( Environmental Chemistry MCQ )

(A) Manufacture of lime from limestone

(B) Photosynthesis by plants

(C) Afforestation

(D) Both (A) and (B)

Option a – Manufacture of lime from limestone

What can be inferred from the following reaction? HbO8+CO—> HbCO+4O2 (Hb = Haemoglobin)

(A) Carbon monoxide carrying capacity of hemoglobin is decreased.

(B) The oxygen-carrying capacity of hemoglobin is increased.

(C) The oxygen-carrying capacity of hemoglobin is decreased.

(D) The addition of more oxygen will lead to its combination with hemoglobin.

Option c – The oxygen-carrying capacity of hemoglobin is decreased.

DDT enters the aquatic food chain through which of the following component? ( Environmental Chemistry MCQ )

(A) Zooplankton

(B) Minnows

(C) Tuna fish

(D) Whale

Option a – Zooplankton

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