Civil Engineering Mcqs

A rainfall may be classified as acidic if its pH value is less or equal to________________?

• (A)  6
• (B)  7
• (C)  5
• (D)  6.5

Answer

Submitted By :Ali Uppal

If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is___________________?

• (A)  D
• (B)  1.25 D
• (C)  1.5 D
• (D)  1.75 D

Answer

Submitted By :Ali Uppal

The recommended detention period for grit chambers is_______________?

• (A)  1 minute
• (B)  2 minutes
• (C)  3 minutes
• (D)  5 minutes

Answer

Submitted By :Ali Uppal

For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed__________________?

• (A)  1.5
• (B)  2.0
• (C)  2.5
• (D)  3.0

Answer

Submitted By :Ali Uppal

In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is_______________?

• (A)  D
• (B)  D /2
• (C)  D/3
• (D)  D/4

Answer

Submitted By :Ali Uppal

The design period of sewage treatment works in normally_________________?

• (A)  5 – 10 years
• (B)  15 – 20 years
• (C)  30 – 40 years
• (D)  40 – 50 years

Answer

Submitted By :Ali Uppal

Oxidation process results in the formation of___________________?

• (A)  Carbon dioxide
• (B)  Nitrates
• (C)  Sulphates
• (D)  All the above

Answer

Submitted By :Ali Uppal

The sewerage system consists of______________________?

• (A)  House sewer
• (B)  Lateral sewer
• (C)  Branch sewer
• (D)  All of these

Answer

Submitted By :Ali Uppal

The minimum diameter of sewer to be adopted is_________________?

• (A)  10 cm
• (B)  12.5 cm
• (C)  15 cm
• (D)  25 cm

Answer

Submitted By :Ali Uppal

The porosity of sediments in sewer pipes, is usually taken as___________________?

• (A)  0.010
• (B)  0.011
• (C)  0.012
• (D)  0.013

Answer

Submitted By :Ali Uppal