56.

57.

58.

59.

60.

6.

62,

68.

64.

The amount of residual chlorine left in public water supply for safety against
pathogenic bacteria is about:

(^) 0.01 to 0.05 ppm (B) 0.05 ‏ما‎ 0.5 ppm

(0) 0.5 00 1.0 ppm (D) 1.0t0 5.0 ppm

In water treatment, rapid gravity filters are adopted to remove:
(A) Dissolved organic substances
(B) Dissolved solids and gases
(C) Floating solids and dissolved inorganie solids
(D) Bacteria and colloidal solids

The percentage of chlorine in fresh bleaching powder is about:

) 5 ര) 20 025
(೧0 5 @) 400580
The means of access for inspection and cleaning of sewer line is known as:
(A) Inlet (B) Manhole
(C) Drop manhole (D) Catch basin
The self eleaning velocity of the sewers is:
(A) Less than 1.0 m/s (8) 1.0m/sto1.2m/s
(0) 1.5m/st02.0 m/s യ 3.0 ‏م علد‎ 3.5 m/s

The limiting value of the depth of neutral axis (x, . /d) for Fe 500 grade steel bars
as per 15 456-2000 is:

(^) 0.58 (B) 0.48

(0 1 യ 0.46

Where a member is built into a masonry ೪7811 which develops only partial restraint,
the member shall be designed to resist a negative moment at the face of support is
Where W is total design load L is the effective span.

(^) WL/ (8) 2

(0) 6 (D) WL/24

Basic Value of span to effective depth ratio for span up to 10 m of a continuous beam
as per 1S 456-2000:

മ 7 (೫) 20

(© 24 D) 26
The minimum area of steel in mm? has to be provided in ல column of size
250 mm x 600 mm is:

(A) 1200 © 0
(C) 1800 (D) 2400

013/2020 10 A