The waste of steel factories is rich in:

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. A lake with an inflow of domestic sewage rich in organic waste may result in:

   A. Drying of the lake very soon due to algal bloom
   B. An increased production of fish due to lot of nutrients
   C. Increased population of aquatic food web organisms
   D. Death of fish due to lack of oxygen

3. A country where _____ per cent of the total aea consists of moutains, gullied foot hills, arid waste and deserts, can never achieve the desired progress unless major part of this usable waste is harnessed to the advantage of its people:

   A. 50 to 55
   B. 55 to 60
   C. 65 to 70
   D. None of these

4. Thick clouds of smoke containing soot and other particles coming out of the factories cause health problems for nearby people. Such as irritation of eyes and:

   A. Heart diseases
   B. Gastric diseases
   C. Kidney trouble
   D. None of these

5. A disease caused by eating fish contained by industrial waste having mercury compounds is known as:

   A. Minamata disease
   B. Osteosclerosis
   C. Bright’s disease
   D. Hashimoto disease

6. Soil formed-after leaching and rich in Al and Fe is

   A. Alluvial
   B. Padsol
   C. Laterite
   D. None of these

7. Rich in fauna and flora areas:

   A. Northern mountainous areas embracing Himalayan, Korakoram and Hindu Kush ranges
   B. In northern areas, Malakand, Hazara and Azad Kashmir are rich in fauna and flora
   C. Both (a) & (b)
   D. None of these

8. During anaerobic digestion of organic waste, such as in producing biogas, which of the following is left undegraded?

   A. Lignin
   B. Lipids
   C. Cellulose
   D. Hemi-cellulose

9. Greenhouse effect is:

   A. Caused by CO2 only
   B. Caused by CH4, SO2, NO2 gases
   C. Caused by those gases which absorb the infra-red light reflecting from earth
   D. Caused by combination of many gases

10. Biological control component is central to advanced agriculture production. Which of the following is used as a third generation pesticide?

    A. Pathogens
    B. Pheromones
    C. Insect repellant
    D. Insect hormone analogue