Which of the following is most poisonous?
BOD is the amount of oxygen:
Which is a degradable pollutant?
BOD is connected with:
Lead (Pb) is mainly considered:
Greenhouse effect is:
Examples of regional pollution are:
Water pollution is caused by:
Greenhouse effect is due to:
The high amount of E. coli in water in the indicator of:
What is the intensity of sound in normal conversation?
The result of ozone hole is:
Most hazardous metal pollutant of automobile exhaust is:
Ozone layer of upper atmosphere is being destroyed by:
The use DDT is banned now a days because it is:
Maximum greenhouse gas is released by which of the following country?
Pollution is not caused by:
Photochemical smog formed in congested metropolitan cities mainly consists of:
Pollution of SO2 destroy:
Which are the primary constituents of photochemical smog?
Ultraviolet rays of sunlight react and produce:
Which of the following gases contributes to global warming?
Green filler is used against which type of pollution?
Positive pollution of soil is due to:
5th June is celebrated as:
Effect of pollution is first marked on:
Loss of forests, urbanization, increasing pollution are all due to:
Biological Oxygen Demand (BOD) is a measure of:
Escherichia coli is used as an indicator organism to determine pollution of water with:
Besides dung, the weed that can be used in biogas production is:

Ozone hole is refers to as:

A. Hole in ozone layer
B. Decrease in the ozone layer in troposphere
C. Decrease in thickness of ozone layer in stratosphere
D. Increase in the thickness of ozone layer in troposphere

Correct Answer: Decrease in thickness of ozone layer in stratosphere ✔

Last Updated: May 23, 2024