Spraying of DDT on crops produces pollution of

Related Mcqs:

1. 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

2. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

3. The use DDT is banned now a days because it is:

   A. Very costly
   B. Not available
   C. Inflammable
   D. Not degraded easily

4. 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

5. 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

6. DDT is a:

   A. Biodegradable pollutant
   B. Green house gas
   C. Non-degradable pollutant
   D. None of the above

7. The maximum biological magnification of DDT through food web is seen in:

   A. Algae
   B. Bacteria
   C. Higher plants
   D. Man

8. 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

9. Forest crops are known as:

   A. Nurse
   B. Main
   C. Subsidiary
   D. All of the above

10. Tending of forest crops includes:

    A. Cultural operation are the operations undertaken for the completion
    B. Or assistance of regeneration/afforestation
    C. Both (a) & (b)
    D. None of these