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Environmental Science And Ecology | Page - 8 | Multiple Choice Questions (MCQ)

Q 05d7ead4cf-sec2 -
Contamination of water with sewage is indicated by cysts of ?
A. Escherichia
B. Escherichia coli
C. Pseudomonas
D. Leishmania
Answer - B
Detail - No Details

Q a1cd343714-sec2 -
Which one of the following is not normally a pollutant?
A. Carbon monoxide
B. Carbon dioxide
C. Hydrocarbons
D. Sulphur dioxide
Answer - B
Detail - No Details

Q faac2446b4-sec2 -
CO emitted by automobiles prevents O-transport to body tissues by ?
A. Changing O2 to CO2
B. Destroying hemoglobin
C. Forming a stable compound with hemoglobin
D. Obstructing the reaction of O2 with hemoglobin
Answer - C
Detail - No Details

Q e2d5b8cc2a-sec2 -
A chemical harmful released by Chlorofluorocarbon to ozone is ?
A. Nitrogen Peroxide
B. Fluorine
C. Chlorine
D. Sulphur dioxide
Answer - C
Detail - No Details

Q 075aa44f2c-sec2 -
As it travels along the food chain, the concentration of DDT ?
A. Increases
B. Remains constant
C. Decreases
D. Fluctuates randomly
Answer - A
Detail - No Details

Q 97c1d86530-sec2 -
Carbon monoxide is a pollutant because it ?
A. Reacts with O2
B. Reacts with hemoglobin
C. Inhibits glycolysis
D. Inactivates nervous system
Answer - B
Detail - No Details

Q ab97f2f8fa-sec2 -
Which one of the following statements is wrong in case of Bhopal, (India) tragedy?
A. It took place in the night of December 2/3/1984
B. Methyl Isocyanate gas leakage took place
C. Thousands of human beings died
D. Radioactive fall out engulfed Bhopal
Answer - D
Detail - No Details

Q 22bbada430-sec2 -
BOD of a pond is related to ______ in per unit volume of water ?
A. All the plants
B. All the nektons
C. All the microbes
D. All the animals
Answer - C
Detail - No Details

Q 934768eff2-sec2 -
BOD is connected with ?
A. Microbes
B. Organic matter
C. Microbes and organic matter
D. None of these
Answer - C
Detail - No Details

Q 6794223504-sec2 -
Biochemical Oxygen Demand (BOD) in a river water ?
A. Increases when sewage gets mixed with river water
B. Remains unchanged when algal bloom occurs
C. Has no relationship with concentration of oxygen in the water
D. Gives a measure of salmonella in the water
Answer - A
Detail - No Details

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