Environmental Science MCQs

✅ The correct answer is option B.
Particulate matter consists of soot, flash, dust of various types, fur, hair, spores etc. They are classified into settleable and suspended particulate matter.

✅ The correct answer is option A.
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).

✅ The correct answer is option C.
The reasons are deforestation, pollution, killing, over exploitation etc. The most important among them is deforestation or destruction of their natural habitat because it will affect the species (flora and fauna) of complete area and not only the few organisms.

✅ The correct answer is option C.
Pyramid of biomass is the graphical representation of total amount of living material at each trophic level of a food chain. Pyramid of numbers represent the number of individuals in each trophic level of a food chain. Pyramid of energy represents the amount of energy at each trophic level of a food chain.

✅ The correct answer is option A.
The resources that are derived from bio-mass of living organisms are called renewable resources.

✅ The correct answer is option C.
The dodo is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean.

✅ The correct answer is option D.
Typically, water vapour occupies about less than 4 percent of the air’s volume near the earth’s surface.

✅ The correct answer is option B.
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.

✅ The correct answer is option C.
Wildlife week is celebrated all over the country in the month of October from 2nd to 8th every year with the view to preserve the fauna, i.e., the animal life of the India.

✅ The correct answer is option A.
Renewable resources are natural resources that can be regenerated or replaced by ecological processes on a relevant timescale. They include biological resources such as biomass, plants, and animals. They also include freshwater, fresh air, soil fertility, and elements like carbon and nitrogen.