Environmental Engineering In Ce(Chemical Engineering ) Questions and answers for exam Preparation

Question 1. Which of the following is the most major constituents of air pollutants?

Oxides of sulphur
Oxides of nitrogen
Carbon monoxide
Hydrogen sulphide

Explanation:-

Answer: Option A. -> Oxides of sulphur

Question 2. __________ plant emits large amount of SO2 as an air pollutant.

Nitric acid
Sulphuric acid
Chloralkali
Iron & steel

Explanation:-

Answer: Option B. -> Sulphuric acid

Question 3. In water chemical treatment plant, use of chloramines ensures

Disinfection
Taste & odour control
Weed control in reservoirs
Removal of permanent hardness

Explanation:-

Answer: Option A. -> Disinfection

Question 4. A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called

Cesspool
Lagoon
Skimming mill
Septic tank

Explanation:-

Answer: Option D. -> Septic tank

Question 5. Hydrogen ion concentration in distilled water is

10-7
7 × 10-7
107
7 × 107

Explanation:-

Answer: Option A. -> 10-7

Question 6. Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.

35
75
95
105

Explanation:-

Answer: Option B. -> 75

Question 7. Dose of chlorine for disinfection of water is about __________ mg/litre of water.

0.01
0.1
0.3
1

Explanation:-

Answer: Option D. -> 1

Question 8. Smog is not formed due to the presence of __________ in the atmosphere.

SO2
NOx
CO2
Any of these

Explanation:-

Answer: Option C. -> CO2

Question 9. Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.

Mercury
Lead
Fluoride
Arsenic

Explanation:-

Answer: Option C. -> Fluoride

Question 10. Which of the following plants does not emit appreciable amount of SO2 in atmosphere?

Thermal power plant
Petroleum refinery
Nitric acid plant
Sulphuric acid plant

Explanation:-

Answer: Option C. -> Nitric acid plant