Explore topic-wise MCQs in Biology.

This section includes 87 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

The Ramsar convention is associated with the conservation of

A. bio fuels
B. forests
C. wet lands
D. dry lands
Answer» D. dry lands
Discussion
2.

Which of the following is not a water pollutant?

A. Zinc
B. Copper
C. Nickel
D. Sulphur dioxide
Answer» C. Nickel
Discussion
3.

Global-500 Award is given for achievement in the field of

A. environmrnt protection
B. movement agaist narcotics
C. movement against terrorism
D. population control
Answer» B. movement agaist narcotics
Discussion
4.

Which one of the following is not related to water pollution ?

A. Eutrophication
B. Nitrification
C. Biological Oxygen Demand (BOD)
D. Oil slicks
Answer» C. Biological Oxygen Demand (BOD)
Discussion
5.

Earth summit was held in

A. Chicago
B. Copenhagen
C. Rio de Jneiro
D. London
Answer» D. London
Discussion
6.

Acid rain is caused due to air pollution by

A. carbon dioxide
B. carbon monoxide
C. methane
D. nitrous oxide and sulphur dioxide
Answer» E.
Discussion
7.

The highest chemical pollution is caused by the industrial effluents of

A. leather industry
B. paper industry
C. rayon industry
D. taxtile industry
Answer» B. paper industry
Discussion
8.

Which of the following Megacities of India generates the largest solid waste per capita annually ?

A. Bengalore
B. Chennai
C. Delhi
D. Mumbai
Answer» D. Mumbai
Discussion
9.

To meet Euro II emission standards, what should be the sulphur content in the ultra low sulphur diesel ?

A. 0.05 percent or less
B. 0.10 percent
C. 0.15 percent
D. 0.20 percent
Answer» B. 0.10 percent
Discussion
10.

The Ozone layer restricts

A. visible light
B. infrared radiation
C. X-ray and Gamma rays
D. ultraviolet radiation
Answer» E.
Discussion
11.

Which one of the following is related to ozone formation ?

A. Photosynthesis process
B. Photochemical process
C. Chemosynthesis process
D. Hydrolysis process
Answer» C. Chemosynthesis process
Discussion
12.

Eco-Mark is given the Indian products that are

A. Pure and unadulterated
B. Rich in proteins
C. Environment-friendly
D. Economically viable
Answer» D. Economically viable
Discussion
13.

Chipko movement was basically against

A. Water pollution
B. Noise pollution
C. Deforestation
D. Cultural Pollution
Answer» D. Cultural Pollution
Discussion
14.

The non-biotic pollution of underground water is

A. bacteria
B. algae
C. arsenic
D. viruses
Answer» D. viruses
Discussion
15.

Global Warming is caused due to the emission of

A. Nitrogen
B. Carbon dioxide
C. Carbon Monooxide
D. Hydrocarbon
Answer» C. Carbon Monooxide
Discussion
16.

Which one of the following adopted "Agenda 21"?

A. First Earth Summit
B. Summit on Sustainable Development
C. Montreal Protocol
D. Kyoto Protocol
Answer» B. Summit on Sustainable Development
Discussion
17.

The use of fossil fuels is responsible for the increase in the amount of which gas in the atmosphere ?

A. Nitrogen
B. Carbondioxide
C. Ozone
D. Argon
Answer» C. Ozone
Discussion
18.

The major combustible component of gobar (cow dung) gas is

A. methane
B. carbon dioxide
C. hydrogen
D. propane
Answer» B. carbon dioxide
Discussion
19.

Consider the following
1. Carbon dioxide
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above is/are the emission/emissions from coal combustion at thermal power plants?

A. Only 1
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
Answer» E.
Discussion
20.

REDD Plus Programme is concerned with which of the following ?

A. Nuclear Non-Proliferation Treaty (NPT)
B. Convention on Biological Diversity (CBD)
C. Millennium Development Goals (MDG)
D. Earth Summit
Answer» C. Millennium Development Goals (MDG)
Discussion
21.

Consider the following statements about Montreal Protocol
1. The Vienna Convention on the ozone layer and the subsequent Montreal Protocol on substance that depleted the ozone layar, adopted in 1987.
2. The protocol provided for a multilateral fund to assist developing countries cover their incremental costs in eliminating CFCs or ODS.
Which of the statements given above is/are correct?

A. Only 1
B. Only 2
C. Both 1 and 2
D. Neither 1 or 2
Answer» D. Neither 1 or 2
Discussion
22.

Consider the following statements
1. According to IPCC, Methane is more than 20 times as effective as CO2 at trapping heat in the atmosphere
2. Methane is more than 50 times as effective as CO2 in depletion of Ozone layer
3. Methane is derived from sources such as rice paddies, bovine flatulence, bacteria in bogs and fossil fuel production
Which of the statements given above is/are correct?

A. 1, 2 and 3
B. 1 and 3
C. Only 2
D. Only 3
Answer» C. Only 2
Discussion
23.

Earlier, leaded petrol used to be the most widespread, through easily preventable, source of urban air pollution in the world. According to WHO (World Health Organisation). 15-18 million children in the developing countries are already suffering from permanent brain damage due to lead poisoning. Why is tetra-ethyl lead added to petrol?

A. It prevents engine knocking
B. Reduces vehicular emissions
C. Increase life of motor tyres
D. None of the above
Answer» B. Reduces vehicular emissions
Discussion
24.

Which of the following are correctly matched?
1. Viena : Protection
convention : of ozone layer
2. Stockholm : Hazardous wastes
convention : and their disposal
3. Rotterdam : Hazardous
convention : chemicals
4. Basel : persistent organic
convention : pollutions

A. 1 and 2
B. 1 and 3
C. 2, 3 and 4
D. 1, 2 and 4
Answer» C. 2, 3 and 4
Discussion
25.

Buddha Nullah has been the main source of pollution of which among the following rivers?

A. Chambal
B. Sutlej
C. Yamuna
D. Gandak
Answer» C. Yamuna
Discussion
26.

The hockey stick graph indicates

A. increase in population
B. increase in urban areas
C. increase in sea level
D. increase in global temperature
Answer» E.
Discussion
27.

Which of the following gases is related from rice fields in the most prominent quantities?

A. Carbon dioxide
B. Methane
C. Carbon monoxide
D. Sulphur dioxide
Answer» C. Carbon monoxide
Discussion
28.

The gas leaked out in Bhopal gas tragedy

A. Carbon monoxide
B. Ethyle isocynate
C. Methyl iscoynate
D. SO
E. and NO
Answer» D. SO
Discussion
29.

Which of the following is chief air pollutant ?

A. CO
B. CO
C. N
D. S
Answer» B. CO
Discussion
30.

Carbon monoxide is harmful to human beings as it is

A. Carcinogenic
B. Antagonistic to CO
C. With higher affinity for haemogobin as compared to oxygen
D. Destructive to O
Answer» D. Destructive to O
Discussion
31.

Which of the following gas do not considered as polluting agent of air ?

A. CO
B. CO
C. NO
D. SO
Answer» B. CO
Discussion
32.

Pollutant produced from vehicles which cause mental diseases is

A. NO
B. SO
C. Pb
D. Hg
Answer» D. Hg
Discussion
33.

Consider the following statements
1. Kyoto protocol came into force in the year 2005
2. Kyoto protocol deals primarily with the deplation of the ozone layer
3. Methane as a green house gas is more harmful than carbon dioxide
Which of the statements given above is/are correct.

A. 1 & 2
B. 1 and 3
C. 1 only
D. 3 only
Answer» C. 1 only
Discussion
34.

World environment day is

A. 28th Feb.
B. 5th June
C. 7th June
D. 10 April
Answer» C. 7th June
Discussion
35.

Buddha Nullah

A. Chambal
B. Sutlej
C. Yamuna
D. Gandak
Answer» C. Yamuna
Discussion
36.

REDD Plus Programme

A. Nuclear Non-Proliferation Treaty (NPT)
B. Convention on Biological Diversity (CBD)
C. Millennium Development Goals (MDG)
D. Earth Summit
Answer» C. Millennium Development Goals (MDG)
Discussion
37.

Consider the following statements about

A. Only 1
B. Only 2
C. Both 1 and 2
D. Neither 1 or 2
Answer» D. Neither 1 or 2
Discussion
38.

Earlier, leaded

A. It prevents engine knocking
B. Reduces vehicular emissions
C. Increase life of motor tyres
D. None of the above
Answer» B. Reduces vehicular emissions
Discussion
39.

Global Warming

A. Nitrogen
B. Carbon dioxide
C. Carbon Monooxide
D. Hydrocarbon
Answer» C. Carbon Monooxide
Discussion
40.

Which one of the following is related to

A. Photosynthesis process
B. Photochemical process
C. Chemosynthesis process
D. Hydrolysis process
Answer» C. Chemosynthesis process
Discussion
41.

Which one of the following is not related to

A. Eutrophication
B. Nitrification
C. Biological Oxygen Demand (BOD)
D. Oil slicks
Answer» C. Biological Oxygen Demand (BOD)
Discussion
42.

Earth summit

A. Chicago
B. Copenhagen
C. Rio de Jneiro
D. London
Answer» D. London
Discussion
43.

Global-500 Award

A. environmrnt protection
B. movement agaist narcotics
C. movement against terrorism
D. population control
Answer» B. movement agaist narcotics
Discussion
44.

Acid rain is

A. carbon dioxide
B. carbon monoxide
C. methane
D. nitrous oxide and sulphur dioxide
Answer» E.
Discussion
45.

To meet

A. 0.05 percent or less
B. 0.10 percent
C. 0.15 percent
D. 0.20 percent
Answer» B. 0.10 percent
Discussion
46.

Which one of the following adopted

A. First Earth Summit
B. Summit on Sustainable Development
C. Montreal Protocol
D. Kyoto Protocol
Answer» B. Summit on Sustainable Development
Discussion
47.

The major combustible component of

A. methane
B. carbon dioxide
C. hydrogen
D. propane
Answer» B. carbon dioxide
Discussion
48.

Eco-Mark

A. Pure and unadulterated
B. Rich in proteins
C. Environment-friendly
D. Economically viable
Answer» D. Economically viable
Discussion
49.

Chipko

A. Water pollution
B. Noise pollution
C. Deforestation
D. Cultural Pollution
Answer» D. Cultural Pollution
Discussion
50.

Spraying of DDT produce pollution of

A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
Answer» E.
Discussion