1000+ Environmental Engineering Objective Type Questions & Answers Pdf - 2

Question: 6

pH value of water indicates

(A) acidity of alkalinity

(B) turbidity

(C) chloride content

(D) hardness

Question: 7

The distribution mains are designed for

(A) maximum daily demand

(B) maximum hourly demand on maximum day

(C) maximum hourly demand

(D) average daily demand

Question: 8

The controlling design parameter in the design of all setting tanks is

(A) depth

(B) percent removal of suspended solids

(C) overflow rate

(D) detention time

Question: 9

With self cleansing velocity in sewers

(A) silting occurs at bottom

(B) neither silting nor scouring occurs at bottom

(C) both silting and scouring occur at bottom

(D) scouring occurs at bottom

Question: 10

Permanent hardness of water can be removed by

(A) adding alum

(B) adding chlorine

(C) boiling

(D) lime soda process