The most harmful pesticide is:

Related Mcqs:

1. The most harmful effect of ionising radiations precisely involves:

   A. Cell membranes
   B. DNA
   C. Mitochondria and ribosomes
   D. Nucleus

2. Most harmful heavy metals causing water pollution:

   A. Pb, Hg, Cr, Cd
   B. P,Mn,B,Mg
   C. N,K,Mo
   D. Zn,Mo,Mg,Ag

3. A very harmful fibrous component causing pollution an inflicting diseases of lungs in human beings:

   A. Grease
   B. Asbestos
   C. Eichhornia roots
   D. ABS micelle

4. The most harmful component of detergents causing water pollution is:

   A. Linear alkyl sulphonate
   B. Sulphates and phosphate
   C. Alkyl benzenes sulphonate
   D. None of these

5. The effect of today’s radioactive fallout will probably be more harmful to children of future generations than to children now living because:

   A. Contamination of milk supply is not cumulative
   B. Infants are more susceptible to radiation
   C. Susceptibility to radiation increases with age
   D. Mutated genes are frequently recessive

6. CO is harmful to human being because:

   A. It decreases CO2 concentration
   B. It competes O2 to combine with haemoglobin
   C. It is carcinogenic
   D. It depletes O3 layer

7. Every pesticide develops its own failure as its repeated use leads to:

   A. The development of resistant pest varieties
   B. Simplification of food web
   C. Reduction in population of useful birds
   D. Increase in weed population

8. 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

9. Which of the following is not a commonly used pesticide?

   A. Aldrin
   B. Lindane
   C. Chlordane
   D. Chloremphenicol

10. 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