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Practice MCQ's- Environment & Ecology 3
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Sudarshan Gurjar is teaching live on Unacademy Plus

Sudarshan Gurjar
Top & Verified Plus Educator. Winner of Perfect Presence Award!! Mentored more than 50,000 students.

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Hi Anngad, big thanks for these video lectures.... I have a doubt in question 2. Opting a defensive strategy against an aggressive opponent, isn't a rational choice. Its logical to be defensive against the aggressive.
  1. Aboutme SUDARSHAN GURAR Verified Educator & Plus Educator at Unacademy. Mentored more than 10,000 students. Teaching Geography since 2013 (UPSC category). A Geography Learner. COURSES AVAILABLE ON PLATFORM Geography through Maps. Current Affairs & In-depth Editorial Analysis. Special Current Affairs on Madhya Pradesh & many more. PLUS CoURSES Current Affairs & In-depth Editorial Analysis. Y unacademy


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  4. Consider the following statements with regard to Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) hile COD measures the amount of oxygen required to oxidise the organic compounds, BOD measures it for inorganic compounds in water. 2. A highly polluted water will have low BOD and high COD 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


  5. . Answer D Statement 1 is incorrect. Chemical oxygen demand (COD) is a measure of the capacity of water to consume oxygen during both the decomposition of organic matter and the oxidation of inorganic chemicals such as ammonia and nitrite. Biological oxygen demand (BOD) is the amount of dissolved oxygen needed (i, e., demanded) by aerobic micro organisms to break down organic material present in a given water sample. Statement 2 is incorrect. A highly polluted water will have high levels of both biological oxygen demand (BOD) and Chemical Oxygen Demand (COD)


  6. In the context of Second commitment period of the Kyoto Protocol, which of the following statements is/are correct? .1. Amendments to Kyoto Protocol for the second commitment 2013- 2020 period were successfully adopted at Doha 2. It deals with containing the emission of Green House Gases (GHGs). 3. India is yet to ratify the Second Commitment Period of the Kyoto Protocol. Select the correct answer using the code given below (a) 1 only (c) 1 and 2 only (b) 2 only (d) 1, 2 and 3


  7. AnswerC .The Kyoto Protocol was adopted in 1997 and the 1st commitment period was from 2008-2012. At Doha in 2012, the amendments to Kyoto Protocol for the 2nd commitment period (the Doha Amendment) were successfully adopted for the period 2013- 2020. statement 1 is correct. Developed countries have already started implementing their commitments under the 'opt-in' provisions of the Doha Amendment. Second commitment period of the Kyoto Protocol on containing the emission of Green House Gases(GHGs) (statement 2 is correct) was ratified by India recently on 24 January 2017. . Hence statement 3 is incorrect.


  8. Hyperloop, recently seen in news, refers to a- (a) newly developed technology to recycle nuclear fuel (b) process to improve photosynthesis efficiency in plants. (c) proposed high-speed passenger and freight transportation model (d) new technology to provide high speed WiFi services in rural areas.