Environmental Engineering Mock Test 1

10%

Question 1 of 10

1. Suspended solids are measured by which of the following?

Jackson’s turbidity meter

Turbidity rod

Gravimetric test

Chromatography

Question 1 of 10

Question 2 of 10

2. Match list 1(calculation of fire demand) with list 2 (formulae) and select the correct answer using the codes given below.

List 1	List 2
A. Kuchling's Formula	1) Q = 3182√P
B. Freeman's Formula	2) Q = 1136[P/5 +10]
C. Buston's Formula	3) Q = 5663√P
D. Central Congested High Value City	4) Q = 4637√P[1-.01√P]

where Q = quantity of water, P = population in thousands
CODE
A B C D

1 2 4 3

2 1 4 3

1 2 3 4

2 3 4 1

Question 2 of 10

Question 3 of 10

3. In which type of water demand, minimum average consumption of water takes place?

Industrial water demand

Institutional and commercial water demand

Fire demand

Domestic water demand

Question 3 of 10

Question 4 of 10

4. The design value of surface loading for horizontal flow circular sedimentation is _______

30-40m³/m²/d

50-100m³/m²/d

20-30m³/m²/d

10-20m³/m²/d

Question 4 of 10

Question 5 of 10

5. What is the expression used for population forecasting by the incremental increase method?

PO (1 + R/100)ⁿ

PO + n*x

PO - n*x

PO + n*x + (n (n+1) /2) *y

Question 5 of 10

Question 6 of 10

6. What can be filled in place of the question mark in the following table?

Degree of hardness	Nature of water
1	Extremely soft water
2	Very soft water
3	Soft water
9	?

Excessive hard water

Very hard water

Reasonably soft water

Hard water

Question 6 of 10

Question 7 of 10

7. In which unit operation objectionable solutes are converted into unobjectionable forms without removal?

Ion transfer

Gas transfer

Solute stabilization

Solids Transfer

Question 7 of 10

Question 8 of 10

8. Which of the following represents the correct relation between displacement velocity and diameter of the particle?

v1 = (8Bg (G-1) d2/f)²

v1 = (8Bg (G-1) d/f) ^1/2

v1 = (8Bg (G-1) d/f)²

v1 = (8Bg (G-1) d/f)

Question 8 of 10

Question 9 of 10

9. Consider the following statements.
i. The arithmetical increase method is suitable for new cities
ii. The decreasing growth rate method is used where the rate of growth shows a downward pattern
iii. The geometrical increase method is used for older cities
Which of the following above statements is/are correct?

ii and iii

i and iii

i, ii, iii

Only ii

Question 9 of 10

Question 10 of 10

10. The range of temperature of water that is required to do the temperature test is __________

10-25⁰C

0-25⁰C

20-30⁰C

10-30⁰C

Question 10 of 10