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

IAS Previous Year Environment Questions – Lecture – 9 – STHAAPNA Series

Q.1) With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements : [2015-I]

  1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
  2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
  3. Fuel cells produce electricity in the form of Alternating Current (AC).

Which of the statements given above is / are correct?

(a) 1 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


Q.2) Hydrogen fuel cell vehicles produce one of the following as “exhaust” [2010] (Do it yourself)



(c) H2O

(d) H2O2


Q.3) Which one of the following fuels causes minimum environmental pollution ? [1995] (Do it yourself) 



(c) Hydrogen

(d) Kerosene


Q.4) Consider the following kinds of organisms : [2012 – I]



  1. Flowering plants

Some species of which of the above kinds of organisms are employed as biopesticides?

(a)1 only

(b)2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


Q.5) Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct? [2012 – I]

  1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
  2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
  3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.

Select the correct answer using the codes given below :

(a)1 only

(b)2 and 3 only

(c)  1 and 3 only

(d) 1, 2 and 3


Q.6) Microbial fuel cells are considered a source of sustainable energy. Why ? [2011 – I]

  1. They use living organisms as catalysts to generate electricity from certain substrates.
  2. They use a variety of inorganic materials as substrates.
  3. They can be installed in waste water treatment plants to cleanse water and produce electricity.

Which of the following statements given above is/ are correct?

(a)1 only

(b)2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


Q.7) With reference to two non-conventional energy sources called ‘coalbed methane’ and ‘shale gas’, consider the following statements : [2014 – I]

  1. Coalbed methane is the pure methane gas extracted from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fine-grained sedimentary rocks.
  2. In India, abundant coalbed methane sources exist, but so far no shale gas sources have been found.

Which of the statements given above is/are correct?

(a)1 only

(b)2 only

(c) Both 1 and 2

(d) Neither 1 nor 2


Q.8) Match List-I (Fuel gases) with List-II (Major constituents) and select the correct answer using the codes given below the lists: [2004]

      List-I             List-II

  1. CNG                  1. Carbon monoxide, Hydrogen
  2. Coal gas         2. Butane, Propane
  3. LPG                  3. Methane, Ethane
  4. Water gas    4. Hydrogen, Methane, Carbon monoxide


(a)A-2; B-1; C-3; D-4

(b)A-3; B-4; C-2; D-1

(c) A-2; B-4; C-3; D-1

(d) A-3; B-1; C-2; D-4


Q.9) It is possible to produce algae based biofuels, but what is/are the likely limitation(s) of developing countries in promoting this industry? [2017]

1.Production of algae based biofuels is possible in seas only and not on continents.

2.Setting up and engineering the algae based biofuel production requires high level of expertise/technology until the construction is completed.

3.Economically viable production necessitates the setting up of large scale facilities which may raise ecological and social concerns.

Select the correct answer using the code given below:

(a)1 and 2 only

(b)2 and 3 only

(c)3 only

(d)1, 2 and 3


Q.10)With reference to technologies for solar power production, consider the following statements :[2014 – I]

1.‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity,  while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process.

2.Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).

3.India has manufacturing base for Solar Thermal technology, but not for Photovoltaics.

Which of the statements given above is/are correct?

(a)1 only

(b)2 and 3 only

(c) 1, 2 and 3

(d) None


Q.11) Consider the following agricultural practices : [2012 – I]

  1. Contour bunding
  2. Relay cropping
  3. Zero tillage

In the context of global climate change, which of the above helps/help in carbon sequestration/storage in the soil?

(a)1 and 2 only

(b)3 only

(c) 1, 2 and 3

(d) None of them

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