A. -5o F
B. -40o F
C. 60o F
D. 32o F
✅ The correct answer is option E.
At 105o F the earth would be radiating energy at the greatest rate or intensity.
At 105o F the earth would be radiating energy at the greatest rate or intensity.
Environmental Science MCQs
Percentage of forest area recommended by the the national forest policy for plains is
A. 33%
B. 67%
C. 30%
D. 10%
✅ The correct answer is option A.
From the given options, the closest option is 33% for plains and 67% for hills.However, there have been many reports that suggest that according to the National Forest Policy (1988), an overall of 33% of the total geographical area of a country should be under forest/tree cover with 66 percent in the hills and 20 percent in the plains.
From the given options, the closest option is 33% for plains and 67% for hills.However, there have been many reports that suggest that according to the National Forest Policy (1988), an overall of 33% of the total geographical area of a country should be under forest/tree cover with 66 percent in the hills and 20 percent in the plains.
What is Carcinogen?
A. Drugs for curing infectious disease
B. Drugs used for curing cancer
C. Cancer causing agent
D. Food colourants
✅ The correct answer is option C.
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.
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.
The temperature scale that sets freezing of pure water at 32o F:
A. Kelvin
B. Fahrenheit
C. Celsius
D. British
✅ The correct answer is option B.
Under this system, the Fahrenheit scale is redefined slightly so that the freezing point of water is exactly 32 °F, and the boiling point is exactly 212 °F or 180 degrees higher.
Under this system, the Fahrenheit scale is redefined slightly so that the freezing point of water is exactly 32 °F, and the boiling point is exactly 212 °F or 180 degrees higher.
As the air temperature increases, with no addition of water vapor to the air, the dew point will:
A. Remain the same
B. Increase
C. Decrease
D. Increase and become equal to the air temperature
✅ The correct answer is option A.
As the air temperature increases, with no addition of water vapor to the air, the dew point will remain the same.
As the air temperature increases, with no addition of water vapor to the air, the dew point will remain the same.
The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called
A. Ecologically sensitive areas
B. Grasslands
C. Delta
D. Biologically sensitive areas
✅ The correct answer is option A.
The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called ecologically sensitive areas.
The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called ecologically sensitive areas.
All are particulate pollutants except
A. Dust
B. Ozone
C. Soot
D. Smoke
✅ 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.
Particulate matter consists of soot, flash, dust of various types, fur, hair, spores etc. They are classified into settleable and suspended particulate matter.
Major cause of Ozone depletion is due to which chemical?
A. ChloroFluoroCarbons
B. Polyphenols
C. Dioxins
D. Rayon
✅ 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).
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).
Wild life is continuously decreasing. What is the main reason of this?
A. Predation
B. Cutting down of forest
C. Destruction of habitat
D. Hunting
✅ 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 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.
Total amount of living material at the various trophic levels of a food chain is depicted by pyramids of
A. numbers
B. energy
C. biomass
D. all of these
✅ 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.
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.