Environmental Engineering Test 1 Nddc Scholarship
Environmental Engineering Test 1 Nddc Scholarship
Question 41
Nitrogen gets oxidized into
During the nitrogen cycle, through processes like nitrification, nitrogen or ammonia is converted (oxidized) by bacteria into nitrites (\(NO_2^-\)) and then further into nitrates (\(NO_3^-\)), which plants can then absorb.
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Question 42
Earthworms and bacteria are called
Decomposers are organisms that break down dead or decaying organisms. Bacteria and fungi are primary decomposers, while earthworms (detritivores) help break down organic matter into smaller pieces for further decomposition.
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Question 43
Region where fresh water meets salt water is called
An estuary (or estuarine habitat) is a partially enclosed coastal body of brackish water where fresh water from rivers and streams mixes with salt water from the ocean.
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Question 44
The Ecological pyramid that is always upright
The Pyramid of Energy is always upright because energy is lost as heat at each trophic level (10% rule). Unlike pyramids of numbers or biomass, energy cannot be inverted because it only flows in one direction and decreases at higher levels.
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Question 45
“Green house effect” with respect to global warming refers to-
The Greenhouse effect is a natural process where certain gases trap heat in the atmosphere. With respect to global warming, it refers to the enhanced warming effect caused by increased levels of these gases due to human activity.
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Question 46
In India, Tropical rain forest occurs in-
In India, Tropical rain forests are found in areas with very high rainfall, such as the Western Ghats, the North-eastern states, and the Andaman and Nicobar Islands.
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Question 47
Atmospheric ozone layer which protect us from UV-B & C is getting depleted most by addition
Chlorofluorocarbons (CFCs) are the primary chemicals responsible for the depletion of the ozone layer. When they reach the stratosphere, UV light breaks them down, releasing chlorine atoms that destroy ozone molecules.
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Question 48
5th June is observed as
World Environment Day is celebrated annually on June 5th to raise global awareness and action for the protection of our environment.
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Question 49
21st March is observed as
World Forest Day (also known as the International Day of Forests) is observed on March 21st each year to celebrate and raise awareness of the importance of all types of forests.
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Question 50
Noise is measured using sound meter and the unit is
The Decibel (dB) is the unit used to measure the intensity or loudness of a sound. Hertz measures frequency, and Joule measures energy.