

MCQOPTIONS
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1. |
The following are the sewage treatment processes :1. Primary sedimentation2. Screening3. Grit removal4. Secondary sedimentation.When only preliminary treatment is to be given for sewage, select the required treatment proceses including their correct sequence from the codes given below: |
A. | 2, 3 |
B. | 2, 3, 1 |
C. | 1, 2, 3, 4 |
D. | 3, 1, 2, 4 |
Answer» C. 1, 2, 3, 4 | |