Daily GS Foundation MCQs - SthaapnaEnvironment Previous Year QuestionsIAS Previous Year QuestionsStaapana - March 2019Sthaapana - March 2019 - Week 5

IAS Previous Year Environment Questions – Lecture – 7 – STHAAPNA Series

Q.Which one of the following is produced during the formation of photochemical smog? [2003]


(b) Nitrogen Oxide

(c) Ozone

(d) Methane


Consider the following : [2011]

  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)1 only

(b)2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?

1. Carbon dioxide
2. Carbon monoxide
3. Nitrogen dioxide
4. Sulphur dioxide
5. Methane

Select the correct answer using the code given below.
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1, 4 and 5 only
(d) 1, 2, 3, 4 and 5


Q. Which of the following can be found as pollutants in the drinking water in some parts of India? [2013]



  1. Fluoride
  2. Formaldehyde
  3. Uranium

Select the correct answer using the codes given below.

(a)1 and 3 only

(b)2, 4 and 5 only

(c) 1, 3 and 5 only

(d) 1, 2, 3, 4 and 5


Biological Oxygen Demand (BOD) is a standard criterion for
(a) Measuring oxygen levels in blood
(b) Computing oxygen levels in forest ecosystems
(c) Pollution assay in aquatic ecosystems
(d) Assessing oxygen levels in high altitude regions


There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon ? [2011]

  1. Discharge of nutrients from the estuaries.
  2. Run-off from the land during the monsoon.
  3. Upwelling in the seas.

Select the correct answer from the codes given below:

(a)1 only

(b)1 and 2 only

(c) 2 and 3 only

(d) 1, 2 and 3


Estuaries possess distinct blooms of excessive growth of a pigmented dinoflagellates. These blooms are called [1998]

(a)red tides

(b)sea tides

(c) black tides

(d) sea flowers


Q.In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique? [2017]

1.It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.

2.Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.

3.Genetic engineering can be used to create microorganisms specifically designed for bioremediation.

Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3


Due to improper/ indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste? [2013 ]



3. Chromium

4. Heptachlor

5. Mercury

6. Lead

7. Plutonium

Select the correct answer using the codes given below.

(a)1, 3, 4, 6 and 7 only

(b)1, 2, 3, 5 and 6 only

(c) 2, 4, 5 and 7 only

(d) 1, 2, 3, 4, 5, 6 and 7

Related Articles