The suitable method of forecasting popu¬lation for a young and rapidly increasing city is_________________?

Question: Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for
[A].

conversion of CO into CO2 in the second compartment.

[B].

conversion of NOx into N2 and NH3 in the first compartment.

[C].

oxidation of unburnt hydrocarbon fuel in the second compartment.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Persons working in cement plants and limestone quarries are more prone to disease like
[A].

cancer

[B].

asthma

[C].

silicosis

[D].

flourosis (bone disease)

Answer: Option C

Explanation:

No answer description available for this question.

Question: Aerobic biological oxidation ponds used for the purification of polluted water
[A].

destroys/removes pathogen from the sewage.

[B].

is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents.

[C].

destroys/removes pathogen much more effectively if the sewage is chlorinated.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.