Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes_________________?

Related Mcqs:

1. Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes________________?

   A. Blood poisoning
   B. Anaemia
   C. Nervous system disorder
   D. All A., B. and C.

2. Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes__________________?

   A. Blood poisoning
   B. Anaemia
   C. Nervous system disorder
   D. All A., B. & C.

3. Which of the following is the most lethal water pollutant ?

   A. Phenol and cyanide
   B. Chlorine
   C. Alkalis
   D. Suspended solids

4. Carbon monoxide is a pollutant, which causes_________________?

   A. Respiratory disease (e.g. asthma)
   B. Asphyxiation (suffocation) leading to death
   C. Retardation in crop growth
   D. Damage to building materials like marble

5. The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

   A. Ionosphere
   B. Troposphere
   C. Stratosphere
   D. None of these

6. Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air’s water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes_________________?

   A. Poor visibility due to sky darkening
   B. Irritation in eyes
   C. Respiratory trouble
   D. All A., B. and C.

7. ‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

   A. Industrial chimney exhaust
   B. Automobiles exhaust
   C. Photochemical reaction in polluted atmosphere
   D. Burning of domestic fuel

8. TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?

   A. Skin disorder
   B. Bronchitis
   C. Bone disease
   D. Cancer

9. Presence of soluble organics in polluted water causes_________________?

   A. Undesirable plants growth
   B. Depletion of oxygen
   C. Fire hazards
   D. Explosion hazards

10. Presence of bacteria in potable (drinking) water causes_________________?

    A. Turbidity
    B. Disease
    C. Bad odour
    D. Bad taste & colour