The most harmful component of detergents causing water pollution is:

Related Mcqs:

1. 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

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. 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

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

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

5. The most harmful pesticide is:

   A. PAN
   B. 2,4,5-T
   C. 2,4-D
   D. DDT

6. 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

7. 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

8. Harmful effects can also result from:

   A. Pruning trees that are growing very slowly
   B. Removing large branches
   C. Eliminating too much of the live crown
   D. Committing similar errors of judgment
   E. All of the above

9. Water pollution is caused by:

   A. Ammonia
   B. Phytoplankton
   C. Industrial effluents
   D. Smoke

10. Common indicator organism of water pollution is:

    A. Eichhornia crassipes
    B. Escherichia coli
    C. Entamoeba histolytica
    D. Lemna pancicostata