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Free download PDF of Environmental Science questions and answers in multiple choice type(mcqs) for SSC CGL, Data Entry Operator, Postal Assistant, UPSC, Railway Exams. These previous years general awareness quiz objective questions answers for competitive exam are very important for prelims and mains exams.
(1)
The pollination of maize takes place by
[A]
pollination by air
[B]
self-pollination
[C]
pollination by rain
[D]
pollination by insects
Comment
(2)
Exobiology deals with the study of:
[A]
external characters of living organisms
[B]
life in the outer layers of atmosphere
[C]
life on the surface of the earth
[D]
life in other planets and space
Comment
(3)
Oxygen liberated during photosynthesis is coming from:
[A]
Atmosphere
[B]
Water
[C]
Carbon dioxide
[D]
Break down of chlorophyll
Comment
(4)
During photosynthesis the liberated gas is:
[A]
Hydrogen
[B]
Nitrogen
[C]
Oxygen
[D]
Carbon dioxide
Comment
(5)
The ‘Theory of Evolution’ was put forward by
[A]
Aristotle
[B]
Louis Pasteur
[C]
Gregor Mendel
[D]
Charles Darwin
Comment
(6)
Which of the following weeds has been found useless to check water pollution caused by industrial affluent?
[A]
Parthenium
[B]
Elephant grass
[C]
Water hyacinth
[D]
Both (A) and (B)
Comment
(7)
Which are the largest fixator of solar energy?
[A]
Green plants
[B]
Fungi
[C]
Protozoa
[D]
Bacteria
Comment
(8)
The carbon dioxide content in the air that we exhale is about
[A]
4%
[B]
8%
[C]
12%
[D]
16%
Comment
(9)
Maximum harm to a tree is caused by
[A]
Loss of its bark
[B]
Loss of all leaves
[C]
Loss of half of its leaves
[D]
Loss of half of its branches
Comment
(10)
Which of the following is a biodegradable waste?
[A]
Nylon
[B]
Plastics
[C]
Wool
[D]
Polythene bags
Comment
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