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Free download in PDF Environment and Ecology Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
The self purifying capacity of water is unable to purify the water, the reason is:
[A]
When the inorganic matter increases it becomes polluted and unfit for use.
[B]
When concentration of suspended particles organic and inorganic substances increases it becomes polluted.
[C]
When concentration of dissolved substances gets increased it becomes polluted.
[D]
When the organic matter increased it becomes polluted.
Answer: When concentration of suspended particles organic and inorganic substances increases it becomes polluted.
42
According to WHO, maximum permissible level of chlorides in drinking water is
[A]
600 mg/L
[B]
800 mg/L
[C]
200 mg/L
[D]
100 mg/L
43
Human activities add 7-9 gigatons of CO2 per annum into the atmosphere. Major contributor to this CO2 is
[A]
Cement industries
[B]
Burning of fossil fuels
[C]
Fermentation industries
[D]
Clearing of forests for agriculture
Answer: Burning of fossil fuels
44
Preparation of hazard-zoning map in case of landslide prone regions involves comprehensive investigation of
[A]
Seismicity pattern of the region.
[B]
Geomorphic features relating to instability of slopes.
[C]
Details of structural and lithological settings.
[D]
All of the above.
Answer: All of the above.
45
Identify the pair (element-health effect) which is correctly matched:
[A]
PAN – Hypoxemia
[B]
Mercury – Nervous disorder
[C]
Arsenic – Kidney damage
[D]
Lead – Methaemoglobinemia
46
Rio+20 summit was held in
[A]
Rio de Janeiro
[B]
Cancun
[C]
Johannesburg
[D]
Durban
47
Which one of the following statement is not correct about the Sargasso Sea?
[A]
The Sargasso Sea records the lowest salinity of North Atlantic Ocean.
[B]
This Sea is covered with rootless sea weeds.
[C]
The Sargasso Sea plays a major role in the migration of the European eel and the American eel.
[D]
There is no mixing of the water of the Sargasso Sea with the remaining water of the North Atlantic Ocean.
Answer: The Sargasso Sea records the lowest salinity of North Atlantic Ocean.
48
Which of the following oxides of nitrogen is the major air pollutant released from automobile exhausts?
[A]
NO
[B]
N2O
[C]
NO2
[D]
N2O3
49
Which one of the following is a non-formal environment education and awareness programme?
[A]
National Environment Awareness Campaign.
[B]
Environmental Education in school system.
[C]
Environmental Management Business Studies.
[D]
Environmental appreciation courses.
Answer: National Environment Awareness Campaign.
50
Which of the following BOD level waste water is permitted to be released inlands by industries under water (Prevention and Control of Pollution) Act, 1974?
[A]
30 mg
[B]
150 mg
[C]
80 mg
[D]
100 mg
51
Which bird has been voted as United Kingdom’s first national bird?
[A]
Robin flies
[B]
Blackbird
[C]
Bald eagle
[D]
Barn owl
52
An expert committee report “Drowning a valley: Destroying a civilization” is related to which dam project?
[A]
Nagarjuna Sagar Dam
[B]
Sardar Sarovar Dam
[C]
Alamatti
[D]
Hirakud Dam
Answer: Sardar Sarovar Dam
53
Consider the following regarding Black Carbon (BC):
[A]
25% to 35% of BC in the global atmosphere comes from India and China.
[B]
It is a solid particle or aerosol.
[C]
It is commonly known as soot.
[D]
All of the above
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