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Environmental Science MCQ Questions and answers | EVS MCQ

Learn and practice General Knowledge questions and answers on Environmental Science MCQ with very easy and understandable explanations. EVS MCQ questions are very helpful different type of competitive ex Page-10 section-3

Each section contains 100 MCQs on Environmental Science .
91
The formation of __________ is the most characteristic feature in upper course of a river
Discuss
Answer & Solution
Answer: Option D
Solution:
The formation of waterfalls is the most characteristic feature in upper course of a river.
92
Which among the following is mobile in nature?
Discuss
Answer & Solution
Answer: Option B
Solution:
Secondary productivity is mobile in nature.
93
Infection of HIV is usually detected by which test
Discuss
Answer & Solution
Answer: Option A
Solution:
ELISA Test ELISA, which stands for enzyme-linked immunosorbent assay, is used to detect HIV infection. If an ELISA test is positive, the Western blot test is usually administered to confirm the diagnosis.
94
Which functional feeding groups are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter?
Discuss
Answer & Solution
Answer: Option B
Solution:
Shredders are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter.
95
When the air temperature is below freezing, the saturation vapour pressure over water is .
Discuss
Answer & Solution
Answer: Option C
Solution:
Saturation vapour pressure increases with rising temperature. Saturation vapour pressure just above liquid water is greater than that over ice. At temperatures below freezing it takes more vapour molecules to saturate air directly above water than it does to saturate air directly above ice.
96
The dramatic increase in agricultural production that have been made possible by high yield miracle crops are called the
Discuss
Answer & Solution
Answer: Option D
Solution:
The dramatic increase in agricultural production that have been made possible by high yield miracle crops are called the green revolution.
97
In the atmosphere, tiny solid or liquid suspended particles of various composition are called:
Discuss
Answer & Solution
Answer: Option A
Solution:
Aerosols are tiny solid or liquid particles that are suspended in the air. Most aerosols are microscopic and too small to see individually without a microscope. Aerosols include things like dust, pollen, smoke, and even cloud droplets.
98
What is meant by GM foods?
Discuss
Answer & Solution
Answer: Option B
Solution:
GM foods genetically modified food.
99
Which of the following gas is present at a very high concentration in our environment?
Discuss
Answer & Solution
Answer: Option D
Solution:
N2 is present at a very high concentration in our environment.
100
_________ refers to the phenomenon in that the organisms are exclusively restricted to a given area.
Discuss
Answer & Solution
Answer: Option B
Solution:
Endemism refers to the phenomenon in that the organisms are exclusively restricted to a given area.