Pollution is:

Related Mcqs:

1. 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

2. Loss of forests, urbanization, increasing pollution are all due to:

   A. Population explosion
   B. Nitrogen di-oxide
   C. Global warming
   D. Sulphur dioxide

3. Water pollution is caused by:

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

4. Examples of regional pollution are:

   A. Acid rain
   B. Smog
   C. Both (a) & (b)
   D. None of these

5. Spraying of DDT on crops produces pollution of

   A. Soil and water
   B. Air and soil
   C. Crops and air
   D. Air and water

6. The percentage of air pollution caused due to smoke:

   A. 10-15%
   B. 15-20%
   C. 20-25%
   D. 2-5%

7. Common indicator organism of water pollution is:

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

8. The major cause of pollution is:

   A. Man
   B. Plants
   C. Animals
   D. Man and animals

9. This acts as bioindicator of air pollution:

   A. Alga
   B. Lichen
   C. Pinus
   D. Mustard
   E. Fern

10. The effect of pollution is first and most marked on:

    A. Natural flora of a place
    B. Natural balance of our environment
    C. Natural geo-chemical cycles
    D. All the above three