A. Very costly
B. Not available
C. Inflammable
D. Not degraded easily
Related Mcqs:
- Spraying of DDT on crops produces pollution of
A. Soil and water
B. Air and soil
C. Crops and air
D. Air and water - The major drawback of DDT as a pesticide is that:
A. Its cost of production is high
B. It is not rapidly degraded in nature
C. Organisms at once developed resistance to it
D. It is significantly less effective than other pesticides - When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because:
A. DDT is a growth retardant
B. DDT disturbed hormonal balance essential for fruit setting
C. DDT killed the pollinating insects along with the pests
D. DDT inhibited flowering - DDT is a:
A. Biodegradable pollutant
B. Green house gas
C. Non-degradable pollutant
D. None of the above - Spraying of DDT on crop produces pollution of:
A. Air only
B. Air and soil only
C. Air, soil and water
D. Air and water only - The maximum biological magnification of DDT through food web is seen in:
A. Algae
B. Bacteria
C. Higher plants
D. Man - Which of the following is likely to have the highest level of DDT deposition in its body?
A. Eel
B. Crab
C. Sea gull
D. Phytoplanktons - 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 - Which of the following is the use of lichens in case of pollution?
A. They treat the polluted water
B. They act as bio-indicators of pollution
C. They promote pollution
D. Lichens are not related with pollution - A major component of gobar gas is:
A. Ethane
B. Methane
C. Butane
D. Ammonia
The correct answer to the question: "The use DDT is banned now a days because it is:" is "Not degraded easily".
