ESE 2021 Technical Quiz || Environmental Engineering || water demand & quality of water

Consider the following statements regarding population forecast:

i. Arithmetic increase method gives a low value and is suitable for well settled and established community. ii. Geometrical increase method gives much higher value and is mostly applicable for growing towns and cities having vast scope of expansion. iii. The S shaped logistic curve for any city gives complete trend of growth of the city right from the beginning to saturation limit of population of the city.

Which of the following statements are correct?

The population of a town in three consecutive decades was 1 lakh, 1.1 lakh and 1.2 lakh respectively. The population of this town in the fourth consecutive decade according to geometric method would be.

Match List-I (Pollutant) with List-II (Harmful Effect) and choose the correct option using the codes given below.

List-I(Pollutant)

p. SO₂

q. NO₂

r. Arsenic

s. Lead

List-II(Harmful effect)

1. Bronchitis

2. Kidney disease

3. Respiratory disease

4. Skin disease

Codes: