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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-2

Each section contains 100 MCQs on Environmental Science .
1
Which country contains about 50% of the world's coal resources?
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
2
What is Carcinogen?
Discuss
Answer & Solution
Answer: Option C
Solution:
A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis, the formation of cancer. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes.
3
The Term Smog was introduced in 1905 by
Discuss
Answer & Solution
Answer: Option A
Solution:
Des Voeux coined the term smog in 1905 to describe the condition of fog which has smoke in it. C. J.F.
4
The gas that absorbs most of the harmful ultraviolet radiation in the stratosphere:
Discuss
Answer & Solution
Answer: Option D
Solution:
Ozone absorbs ultraviolet radiation but lets other types of radiation, such as visible light, pass through. Molecules of ozone absorb ultraviolet radiation. The ozone gas throughout the stratosphere is called the ozone layer. It absorbs harmful ultraviolet radiation from the Sun.
5
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of
Discuss
Answer & Solution
Answer: Option A
Solution:
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of chlorofluorocarbon.
6
Which of the following green house gases trap more heat?
Discuss
Answer & Solution
Answer: Option D
Solution:
Trifluoro methyl sulphurpentafluoride trap more heat.
7
The most abundant gas in the stratosphere is:
Discuss
Answer & Solution
Answer: Option B
Solution:
The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
8
Acid rain mainly result from
Discuss
Answer & Solution
Answer: Option A
Solution:
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. ... Nitrogen oxides can also be produced naturally by lightning strikes, and sulfur dioxide is produced by volcanic eruptions.
9
Animals that feed only on plants are called
Discuss
Answer & Solution
Answer: Option B
Solution:
Animals that eat only plants are called herbivores (or primary consumers). Animals that eat other animals are called carnivores.
10
The first trophic level in a food chain
Discuss
Answer & Solution
Answer: Option A
Solution:
The first trophic level of the food chain is always occupied by green plants which are termed to be producers. This is because producers absorb sunlight, abiotic factor and fix it into food chain. This energy is transferred to organisms in other trophic levels of the food chain.