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Shankar IAS Test: Environmental Pollution- 1 - UPSC MCQ


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10 Questions MCQ Test Famous Books for UPSC Exam (Summary & Tests) - Shankar IAS Test: Environmental Pollution- 1

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Shankar IAS Test: Environmental Pollution- 1 - Question 1

Consider the following statements:

1. DDT

2. Salts of heavy metals

3. Radioactive substances

Which of these pollutants is/are non-biodegradable?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 1
DDT, Salts of heavy metals, Radioactive substances are some of the examples of non-biodegradable pollutants.

Shankar IAS Test: Environmental Pollution- 1 - Question 2

Consider the following statements about the carbon monoxide:

1. It lowers the amount of oxygen that enters our blood

2. It is produced from the combustion of natural and synthetic products which gives it a light black colour.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 2

Correct Statement: 1
Yes, carbon monoxide (CO) can lower the amount of oxygen in your blood. When inhaled, CO binds to hemoglobin in red blood cells, forming carboxyhemoglobin (COHb). This reduces the amount of hemoglobin available to carry oxygen.

Shankar IAS Test: Environmental Pollution- 1 - Question 3

Consider the following statements about the Ozone:

1. It releases mainly from air-conditioning systems and refrigeration.

2. Vehicles and industries are the major source of ground-level ozone emissions.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 3

Ozone: It occurs naturally in the upper layers of the atmosphere.

This important gas shields the earth from the harmful ultraviolet rays of the sun. However, at the ground level, it is a pollutant with highly toxic effects. Vehicles and industries are the major sources of ground-level ozone emissions. Ozone makes our eyes itch, burn, and water. It lowers our resistance to cold and pneumonia.

Shankar IAS Test: Environmental Pollution- 1 - Question 4

Consider the following statements regarding the formation of smog:

1. Photochemical smog is a term used to describe air pollution that is a result of the interaction of sunlight with certain chemicals in the atmosphere.

2. Ground-level ozone is formed when vehicle emissions contain nitrogen oxides and volatile organic compounds.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 4
  • Photochemical smog (smog) is a term used to describe air pollution that is a result of the interaction of sunlight with certain chemicals in the atmosphere.

  • One of the primary components of photochemical smog is ozone.

  • Ground-level ozone is formed when vehicle emissions containing nitrogen oxides (primarily from vehicle exhaust) and volatile organic compounds (from paints, solvents, printing inks, petroleum products, vehicles, etc.) interact in the presence of sunlight.

Shankar IAS Test: Environmental Pollution- 1 - Question 5

Q. Which of the following is/are advantages of fly ash?
1.Fly ash bricks are light in weight and offer high strength and durability.
2.Fly ash is a better fill material for road embankments and in concrete roads.
3.Fly ash can be used in reclamation of wastelands.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 5
  1. Fly ash bricks are light in weight and offer high strength and durability.

    • This statement is correct. Fly ash bricks are known for being lightweight, having high strength, and offering durability. They are often used as a building material due to these properties.
  2. Fly ash is a better fill material for road embankments and in concrete roads.

    • This statement is correct. Fly ash is used as a fill material in road embankments and in the construction of concrete roads. It improves the workability and strength of concrete, and it can also be used to stabilize soil in road construction.
  3. Fly ash can be used in reclamation of wastelands.

    • This statement is correct. Fly ash can be utilized in the reclamation of wastelands by improving soil properties, enhancing fertility, and supporting vegetation growth, which helps in land restoration.

Given that all three statements are correct, the answer is: All of these.

Shankar IAS Test: Environmental Pollution- 1 - Question 6

Which of these are correctly matched?

1. Arresters - These are used to separate particulate matters from contaminated air

2. Scrubbers - These are used to clean air for both dusts and gases by passing it through a dry or wet packing material

Which of these statements is/are correct:

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 6

Control of particulate matter: Two types of devices - arresters and scrubbers are used to remove particulate pollutants from the air. These are arresters and scrubbers.

Arresters: These are used to separate particulate matters from contaminated air.

Scrubbers: These are used to clean air for both clouds of dust and gases by passing it through a dry or wet packing material.

Shankar IAS Test: Environmental Pollution- 1 - Question 7

Consider the following statements:

1. Biocides, polychlorinated biphenyls (PCBs) and heavy metals directly eliminate sensitive aquatic organisms.

2. Hot waters discharged from industries, when added to water bodies, lowers its DO content.

Which of these statements is/are not correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 7
  • Polluted water reduces Dissolved Oxygen (DO) content, thereby, eliminates sensitive organisms like plankton, molluscs and fish etc.

  • Biocides, polychlorinated biphenyls (PCBs) and heavy metals directly eliminate sensitive aquatic organisms. Hot waters discharged from industries, when added to water bodies, lowers its DO content.

Shankar IAS Test: Environmental Pollution- 1 - Question 8

Consider the following statements:

1. Water pollution by organic wastes is measured in terms of Biochemical Oxygen Demand (BOD).

2. BOD is the amount of dissolved oxygen needed by bacteria in decomposing the organic wastes present in water.

3. It is expressed in milligrams of oxygen per litre of water.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 8
  • DO, BOD, COD Presence of organic and inorganic wastes in water decreases the dissolved oxygen (DO) content of the water.

  • Water having DO content below 8.0 mg L-1 may be considered as contaminated. Water having DO content below. 4.0 mg L-1 is considered to be highly polluted. DO content of water is important for the survival of aquatic organisms.

Shankar IAS Test: Environmental Pollution- 1 - Question 9

Which of the following are the effects of soil pollution on agriculture:

1. Increased salinity.

2. Loss of soil and nutrients.

3. Increased nitrogen fixation.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 9

Effects of soil pollution on Agriculture; Reduced soil fertility; Reduced nitrogen fixation; Increased erosion; Loss of soil and nutrients; Reduced crop yield; Increased salinity; Deposition of silt in tanks and reservoirs

Shankar IAS Test: Environmental Pollution- 1 - Question 10

Consider the following statements:

1. Alpha particles can be blocked by a piece of paper and human skin.

2. Beta particles can penetrate through the skin, while can be blocked by some pieces of glass and metal.

3. Gamma rays can penetrate easily to human skin and damage cells on its way through, reaching far, and can only be blocked by a very thick, strong, massive piece of concrete.

Which of these statements is/are correct?

Detailed Solution for Shankar IAS Test: Environmental Pollution- 1 - Question 10
  • Alpha particles can be blocked by a piece of paper and human skin.

  • Beta particles can penetrate through the skin, while can be blocked by some pieces of glass and metal.

Gamma rays can penetrate easily to human skin and damage cells on its way through, reaching far, and can only be blocked by a very thick, strong, massive piece of concrete.

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