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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-1 section-9

Each section contains 100 MCQs on Environmental Science .
1
Thermal belts are:
Discuss
Answer & Solution
Answer: Option C
Solution:
The thermal belt refers to a mountainside zone where frost or freezing temperatures are less likely to occur than they are at either higher or lower elevations.
2
The term "Biocoenosis" was proposed by
Discuss
Answer & Solution
Answer: Option B
Solution:
A biocenosis (UK English, biocoenosis, also biocenose, biocoenose, biotic community, biological community, ecological community, life assemblage,) coined by Karl Möbius in 1877, describes the interacting organisms living together in a habitat (biotope).
3
The best way to check soil erosion is by providing adequate trees and
Discuss
Answer & Solution
Answer: Option A
Solution:
The best way to check soil erosion is by providing adequate trees and grass cover.
4
_________ is a mixture of 50 - 90% of methane
Discuss
Answer & Solution
Answer: Option A
Solution:
Methane also is the chief constituent of natural gas, which contains from 50 to 90 percent methane (depending on the source), and occurs as a component of firedamp (flammable gas) along coal seams.
5
The source of atmospheric oxygen is
Discuss
Answer & Solution
Answer: Option B
Solution:
The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. Hence, answer B is correct.
6
Which of the following type of pollution can cause the outbreak of jaundice
Discuss
Answer & Solution
Answer: Option C
Solution:
Water pollution can cause the outbreak of jaundice. Jaundice is caused by the organism Seriola quinqueradiata. The disease is characterised by yellow colorations of the skin, these yellow colourations are majorly due to the build-up of bilirubin in the blood.
7
India is primary centre of domestication of
Discuss
Answer & Solution
Answer: Option C
Solution:
Vavilov centers are regions where a high genetic diversity can be found, representing the natural relatives of domesticated crop plants or animals. These areas are also called the primary areas of domestication. India is a primary center of domestication of Water Buffalo.
8
Which is an example for sedimentary biogeochemical cycle
Discuss
Answer & Solution
Answer: Option D
Solution:
Sedimentary cycles include those of iron, calcium, phosphorus, sulfur, and other more-earthbound elements.
9
Which of the following is not a reason why water warms and cools much more slowly than land?
Discuss
Answer & Solution
Answer: Option E
Solution:
Water warms and cools much more slowly than land because it takes more heat to raise the temperature of a given amount of soil 1oC than it does to raise the temperature of water 1oC.
10
The gas that shows the most variation from place to place and from time to time in the lower atmosphere:
Discuss
Answer & Solution
Answer: Option C
Solution:
The gas that shows the most variation from place to place and from time to time in the lower atmosphere Water vapour (H2O).