WBCS Mains Environment General & Miscellaneous Questions 2023

Q. The maximum height of Troposphere from the Earth’s surface is

(A) 10 Km
(B) 12 Km
(C) 14.5 Km
(D) 16.8 Km

Correct Answer: (D) 16.8 Km.

Q. The use of living microorganism to degrade environmental pollutants is called

(A) microremediation
(B) nanoremediation
(C) bioremediation
(D) All of the above

Correct Answer: (C) bioremediation.

Q. Competitive Exclusion Principle was denoted by

(A) Darwin
(B) Gause
(C) Lamarck
(D) Odum

Correct Answer: (B) Gause.

WBCS Mains Environment General & Miscellaneous Questions 2022

Q. Which one of the following would be described as anthropogenic?

(A) Water backing up behind a beaver dam
(B) The dinosaurs going extinct
(C) Logging a forest
(D) A mudslide burying a stream

Correct Answer: (C) Logging a forest.

Q. What is the name of the new model of Sustainable Development of Rivers proposed by the Government of India?

(A) Namani Bharat
(B) Arth Ganga
(C) River SDG
(D) Namani Nadi

Correct Answer: (B) Arth Ganga.

Q. If you are concerned about bio magnification of toxins, which one of the following would you most want to avoid eating?

(A) Tuna (tertiary consumer)
(B) Seaweed (producer)
(C) Urchin (primary consumer)
(D) Sculpin (secondary consumer)

Correct Answer: (A) Tuna (tertiary consumer).

Q. The equal sharing of Earth’s resources is specifically known as

(A) Environmental justices
(B) Sustainability
(C) Environmental equity
(D) Ecological foot printing

Correct Answer: (C) Environmental equity.

Q. Depletion of the stratospheric ozone layer occurs when molecules of ozone are destroyed by chemicals such as

(A) CFC
(B) DDT
(C) O₃
(D) PCB

Correct Answer: (A) CFC.

Q. Carbon mono oxide is a pollutant because

(A) reacts with hemoglobin
(B) makes nervous system inactive
(C) it reacts with O₂
(D) it inhibits glycolysis

Correct Answer: (A) reacts with hemoglobin.

Q. What is B.O.D.?

(A) The amount of O₂ utilized by organisms in water
(B) The amount of O₂ utilized by micro-organisms for decomposition
(C) The total amount of P₂ present in water
(D) All of the above

Correct Answer: (B) The amount of O₂ utilized by micro-organisms for decomposition.

WBCS Mains Environment General & Miscellaneous Questions 2021

Q. Conservation of ozone depletion was discussed in the following protocol:

(A) Montreal
(B) Delhi
(C) Tokyo
(D) Rio de Janeiro

Correct Answer: (A) Montreal.

Q. Chlorofluorocarbon (CFC) is used in

(A) Refrigerator
(B) Air conditioners
(C) Perfumes
(D) All of the above

Correct Answer: (D) All of the above.

Q. DDT and Aluminium cans are examples of

(A) primary pollutant
(B) secondary pollutant
(C) biodegradable pollutant
(D) non-biodegradable pollutant

Correct Answer: (D) non-biodegradable pollutant.

Q. Ozone hole is largest over

(A) North pole
(B) South pole
(C) Africa
(D) India

Correct Answer: (B) South pole.

WBCS Mains Environment General & Miscellaneous Questions 2020

Q. The major stratospheric ozone layer over Antartica was discovered in

(A) 1983
(B) 1985
(C) 1987
(D) 1980

Correct Answer: (B) 1985.

Q. Ultrafiltration can remove

(A) suspended solids
(B) bacteria
(C) protozoa
(D) All of the above

Correct Answer: (D) All of the above.

WBCS Mains Environment General & Miscellaneous Questions 2019

Q. What is ‘Arribada’?

(A) Mass Nestling of Olive Ridley
(B) Setting up a habitat by Red Panda
(C) Colony formation by Penguin
(D) None of the above

Correct Answer: (A) Mass Nestling of Olive Ridley.

Q. The fresh water percentage of Earth is

(A) 1%
(B) 2.5%
(C) 5%
(D) 10%

Correct Answer: (B) 2.5%.

Q. The following name is associated with rain water harvesting:

(A) Rajendra Singh
(B) Baba Amte
(C) S. C. Nair
(D) Medha Patkar

Correct Answer: (A) Rajendra Singh.

Q. Roof top water harvesting is highest in

(A) China
(B) Brazil
(C) Ghana
(D) India

Correct Answer: (C) Ghana.

Q. Major cause of Ozone depletion is due to which chemical?

(A) Chloro Fluoro Carbons
(B) Polyphenols
(C) Dioxins
(D) Rayon

Correct Answer: (A) Chloro Fluoro Carbons.

WBCS Mains Environment General & Miscellaneous Questions 2018

Q. Largest amount of energy, the earth receiving from the sun is in the form of

(A) Infrared and heat energy
(B) γ-rays
(C) UV-rays
(D) X-rays

Correct Answer: (A) Infrared and heat energy.

Q. Which ray strikes the earth due to depletion of O₃ layer?

(A) Infrared
(B) Microwave
(C) Visible
(D) Ultraviolet

Correct Answer: (D) Ultraviolet.

Q. The best method for sterilisation of water uses

(A) Autoclaving
(B) Ozone
(C) Chlorine water
(D) UV rays

Correct Answer: (B) Ozone.

Q. Which one of the following is not metallic pollutant?

(A) Hg
(B) Pb
(C) Cr
(D) Detergent

Correct Answer: (D) Detergent.

WBCS Mains Environment General & Miscellaneous Questions 2017

Q. The Ganga River Cleaning Programme has been collaborating with Germany, because Germany has been known for cleaning its river

(A) Danube
(B) Rur
(C) Rhine
(D) All of the above

Correct Answer: (C) Rhine.

WBCS Mains Environment General & Miscellaneous Questions 2016

Q. The following compound is not a persistent organic pollutant:

(A) DDT
(B) Dioxins
(C) Endosulfan
(D) Methane

Correct Answer: (D) Methane.

Q. The United Nations published the World Water Development Report in

(A) 2005
(B) 2007
(C) 2009
(D) 2011

Correct Answer: (A) 2005.

Q. Man and Biosphere program was undertaken in

(A) 1971
(B) 1973
(C) 1975
(D) 1980

Correct Answer: (A) 1971.

Q. The following country is carbon negative in nature:

(A) Nepal
(B) India
(C) Bhutan
(D) China

Correct Answer: (C) Bhutan.

Q. The Abyssal Zone is at a depth of

(A) 1000-2000m
(B) 2000-4000m
(C) 4000-6000m
(D) 6000-8000m

Correct Answer: (C) 4000-6000m.

Q. The first ecocity of the world was built in

(A) USA
(B) France
(C) Brazil
(D) UK

Correct Answer: (C) Brazil.

WBCS Mains Environment General & Miscellaneous Questions 2015

Q. The release of which one of the following into ponds and wells helps in controlling the mosquitoes?

(A) Crab
(B) Dogfish
(C) Gambusia Fish
(D) Snail

Correct Answer: (C) Gambusia Fish.

Q. The length of the coastal zone from the high tide line is

(A) 200 M
(B) 500 M
(C) 700 M
(D) 1000M

Correct Answer: (B) 500 M.

WBCS Mains Environment General & Miscellaneous Questions 2014

Q. The gas used in refrigerators that destroys the ozone layer is

(A) ammonia
(B) chlorofluorocarbon
(C) nitrous oxide
(D) methane

Correct Answer: (B) chlorofluorocarbon.

Q. Depletion of ozone layer increases the incidence of

(A) Blood cancer
(B) Lung cancer
(C) Skin cancer
(D) Brain cancer

Correct Answer: (C) Skin cancer.