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Environment & Ecology GK Questions with Answers – Page 26

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Environment & Ecology multiple choice questions with answers and explanations, 20 per page, for SSC, Banking, UPSC, Railway and state exams.

805 questions

Q502.Environment & EcologyAsked in: Rajasthan · 16 Sept 2018, LDC Paper 1Easy

Which organism is commonly known as 'Friends of farmers'?

  1. A.Cockroach
  2. B.Earthworm
  3. C.Honey Bee
  4. D.Housefly
Show answer
Correct answer: B. Earthworm

The earthworm is called the farmer's friend because its work keeps soil fit for crops. As it burrows it loosens the soil and lets air and water reach the roots, and the castings it leaves behind are rich in nitrogen, phosphorus and potash, so the topsoil is steadily renewed.

Q503.Environment & EcologyAsked in: Rajasthan · 29 Nov 2020Medium

In Rajasthan, which of the following districts are badly affected by the ecological problem of 'SEM'?

  1. A.Bharatpur - Dhaulpur
  2. B.Banswara - Dungarpur
  3. C.Jalore - Sirohi
  4. D.Shriganganagar - Hanumangarh
Show answer
Correct answer: D. Shriganganagar - Hanumangarh

Sem is the local word for waterlogging with salt, and it hurts Sriganganagar and Hanumangarh the most because these districts lie in the command area of the Gang Canal and the Indira Gandhi Canal.

Q506.Environment & EcologyAsked in: RRB JE · 31 Aug 2019Easy

Which of the following is a disadvantage of most of the renewable energy sources?

  1. A.Unreliable supply
  2. B.High waste disposal cost
  3. C.Highly polluting
  4. D.High running cost
Show answer
Correct answer: A. Unreliable supply

Most renewable sources depend on the weather, so the power they give is intermittent rather than steady. Solar panels make nothing at night and little under thick cloud, wind turbines stop when the wind drops, and hydropower falls away in a weak monsoon.

Q508.Environment & EcologyHard

Which of the following is NOT one of the three Rio Conventions?

  1. A.UN Framework Convention on Climate Change
  2. B.Convention on Biological Diversity
  3. C.UN Convention to Combat Desertification
  4. D.Ramsar Convention on Wetlands
Show answer
Correct answer: D. Ramsar Convention on Wetlands

The Ramsar Convention was signed at Ramsar in Iran in 1971 and came into force in 1975, two decades before the Earth Summit, and its secretariat sits at Gland in Switzerland; it therefore has no connection with Rio.

Q509.Environment & EcologyMedium

The secretariat of the UNCCD is located in which city?

  1. A.Geneva
  2. B.Nairobi
  3. C.Bonn
  4. D.Paris
Show answer
Correct answer: C. Bonn

The permanent secretariat of the United Nations Convention to Combat Desertification has been based at Bonn in Germany since 1999, in the same United Nations campus that hosts the secretariat of the UNFCCC, which is a useful memory link because both are Rio Conventions with their secretariats in the same…

Q513.Environment & EcologyMedium

The fourteenth Conference of the Parties (COP14) to the UNCCD, held in India in 2019, adopted which declaration?

  1. A.Rio Declaration
  2. B.New Delhi Declaration
  3. C.Nagoya Protocol
  4. D.Bonn Challenge
Show answer
Correct answer: B. New Delhi Declaration

India hosted the fourteenth Conference of the Parties to the UNCCD at Greater Noida near New Delhi in 2019, and the meeting closed with the New Delhi Declaration, in which the parties committed themselves to restoring degraded land and to working towards Land Degradation Neutrality.

Q517.Environment & EcologyAsked in: Rajasthan · 6 Nov 2022, Shift 1Medium

Which one is not the major technique of soil conservation?

  1. A.Control on cattle grazing
  2. B.Crop rotation
  3. C.Use of chemical fertilizers
  4. D.Strip cropping
Show answer
Correct answer: C. Use of chemical fertilizers

The question asks for the odd one out, and the heavy use of chemical fertilisers damages soil rather than conserving it: it acidifies the soil, kills soil microorganisms, leaves salt residues, and the surplus nitrate and phosphate wash into water bodies and cause eutrophication.

Q520.Environment & EcologyEasy

Carbon dioxide forms about what share of the atmosphere by volume?

  1. A.About 0.04 per cent
  2. B.About 4 per cent
  3. C.About 21 per cent
  4. D.About 0.9 per cent
Show answer
Correct answer: A. About 0.04 per cent

Carbon dioxide is a trace gas, roughly four hundredths of one per cent of dry air by volume, yet it is the source of all the carbon that photosynthesis fixes into food and the chief gas by which human activity is warming the planet.