Environmental Studies · General Awareness

Pollution and Human Impact

2,864 Questions

Pollution involves the introduction of contaminants into natural environments, causing severe human impact. This hub focuses on water pollution, thermal pollution, soil contamination, and diseases like Minamata. It is a highly relevant topic for environmental studies in UPSC exams.

Water pollution sourcesOcean pollutantsHeavy metal contaminationSoil erosion impactsThermal pollution causes

Pollution and Human Impact Questions

Multiple choice transpiration major activities of living organisms biology

Prolonged liberal irrigation of agricultural fields is likely to create the problem of

  1. Acidity

  2. Aridity

  3. Metal toxicity

  4. Salinity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. Salination can be caused by natural processes, such as mineral weathering or the gradual withdrawal of an ocean. It can also be caused by artificial processes such as irrigation. The ions responsible for salination are: Na$^{+}$, K$^{+}$, Ca$^{2+}$, Mg$^{2+}$ and Cl$^{-}$. When excess irrigation is done, the negatively charged ions are leached or washed away and only positively charged ions remain in the soil as they are held up by clay particles in the soil. This creates salinity problem.

Multiple choice zoology garbage in, garbage out plastic waste recycling of paper thermocol

Plastic can cause flood because

  1. It blocks the drainage system.

  2. It blocks the pores of soil.

  3. It pollutes water body

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plastic waste does not biodegrade and often accumulates in drainage systems, causing blockages that lead to urban flooding during heavy rains.

Multiple choice commercial studies forests: our lifeline afforestation deforestation and its effect deforestation

The level of pollution increases due to whch of the following activity?

  1. Deforestation

  2. Aforestation

  3. Nitrogen cycle

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trees act as natural air filters, absorbing pollutants and carbon dioxide. Deforestation reduces this capacity, leading to an increase in the concentration of pollutants in the atmosphere.

Multiple choice rivers - means of livelihood evs

The ________ who visit the rivers also add to the water pollution by throwing plastic bottles and covers into the river.

  1. Birds

  2. Animals

  3. People

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The people who visit the rivers also add to the water pollution by throwing plastic bottles and covers into the river. With increasing population the use of plastic product also increasing day by day. Plastic is a threat to the environment. The plastic we through in rivers takes thousands and thousands of years to get decomposed. This toxic plastic hampers the aquatic life river at the same time it pollutes drinking water. 

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

To manufacture computer chips, many chemicals, large amounts of water, and energy are required which is harmful to environment. a process is discovered which significantly reduces the quantities of chemicals, energy, and water needed to produce chips. This is an application of:

  1. Green chemistry

  2. waste management

  3. revolution resource recovery

  4. Green revolution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Green chemistry seeks to develop products and processes that are kind to the environment. This can involve reducing the waste a process creates, using renewable materials, lessening the energy required to form a product, etc.
Multiple choice biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

Prolonged liberal irrigation of agricultural fields is likely to create the problem of -

  1. Aridity

  2. Metal toxicity

  3. salinity

  4. Acidity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Irrigation without proper drainage of water leads to water clogging in the soil. Due to clogging, the vegetation and crops die due to insufficient supply of oxygen to them this condition is called as Salinity.
So, the correct answer is 'Salinity'.
So the correct option is C.
Multiple choice physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

Which of the following are examples of noise pollution?

  1. Sounds from factories

  2. Sounds from explosion of fire crackers

  3. Sounds from aircrafts

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sounds from factories, fire crackers, aircraft, etc. are much above $80$ dB, which is the level above which noise causes discomfort and becomes physically painful.

Multiple choice physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

Presence of excessive unwanted sounds in the environment is called 

  1. air pollution

  2. noise pollution

  3. water pollution

  4. all of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollution is that , which harms our environment or health of animals on earth , excessive unwanted sounds are harmful to ear , therefore it is called noise pollution .

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which of the following condition is caused due to lead pollutant?

  1. Kidney damage

  2. Brain damage

  3. CNS damage

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lead is one of the major pollutant which is released from lead batteries, industries etc. It damages kidney, liver, brain and central nervous system.

Multiple choice evs flow of water irrigation irrigation and its types irrigation and types

Prolonged liberal irrigation of agricultural fields is likely to create the problem of

  1. Acidity

  2. Aridity

  3. Salinity

  4. Metal toxicity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Soluble salts leach out of soil due to prolonged irrigation. As a result the soil becomes rich in salts causing soil salinity. So, the correct option is 'Salinity'.

Multiple choice biology option c: ecology and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity

Bioindicators are used for knowing

  1. Minerals

  2. Oxygen demand

  3. Air pollution

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bioindicators are living organisms such as plants, animals, and microorganisms that are used as indicators. They are used for knowing the different content of an ecosystem such as minerals, oxygen demand, air pollution. Lichens are used for knowing air pollution. Algae bloom indicates large amount of nitrates and phosphates in lakes and rivers.

Thus, the correct answer is 'All of the above.'