My Report

Environmental Engineering Practice Test 1

Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)

1. The elapsed time in gravity filter is 1sec. What is the height of fall in a single descent?

9.8m

4.9m

4.4m

8.8m

2. The reduction of carbon dioxide by cascade aerators is in the range of __________

20-30%

50-60%

40-50%

10-20%

3. Given list 1 and list 2, find which of the following pair is correctly matched?

List 1 (Chemical substance)	List 2 (Permissible limit in ppm)
A. Lead	1. 0.05
B. Phenol	2. 0.001
C. Zinc	3. 0.01
D. Chromium	4. 5
	5. 0.2

B-3

C-4

A-5

D-2

4. What are the factors affecting per capita demand?

Cost of water, quality of water, size of city

Size of city

Cost of water, quality of water, size of city, habit of people

Size of city, habit of people

5. 1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

864000

36000

6000

24000

6. Which method is suitable if the growth rate is decreasing and the population is reaching towards saturation?

Arithmetical increase method

Graphical comparison method

Zoning method

Decreased rate of growth method

7. What is the indicator used in EDTA method?

Potassium dichromate

Erio chrome, black T

Potassium chloride

Potassium chromate

8. Which of the following statement is correct?

Loss of water is more if the pressure in the distribution system is less

Intermittent water supplies leads to less water consumption

Rich class consumes less water

Water consumption is less in flush system

9. What is the full form of NTU in context with turbidity?

Number of transfer unit

Nephelometric turbidity unit

Neurological turbidity unit

Network terminal unit

10. Which of the following process is used to remove the colloidal particles from water?

Chemical precipitation

Ion exchange

Chemical coagulation

Adsorption

» Next - Environmental Engineering Practice Test 2

Manish Bhojasia - Founder & CTO at Sanfoundry

Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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