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EXAM PREPARATION

Objective Question & Answer

QUESTION

Objective Question

Q.1

Match List-I with List-Il and select the correct answer using the codes given below:

List-I (Treatment Unit)

A. Grit chamber

B. Primary sedimentation

C. Activated sludge

D. Sludge digestion

List-II (Detention Time)

1. Six hours

2. Two minutes

3. Two hours

4. Twenty days

Codes:

                 A        B        C        D

A

3         1         4          2
B

2         3         1          4
C
2          1          3          4
D
1          2          3          4
Answer ( Option B)

2         3         1          4

Solution

Grit chamber - Two minutes

Primary sedimentation - Two hours

Activated sludge - Six hours

Sludge digestion - Twenty days

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