1532017 ااا ااا اما

79.

80.

81.

82.

83.

84.

85.

86.

If porosity is denoted by n and specific gravity of soil solids is G, then hydraulic
gradient of the deposits to develop bailing of sand is given by
G-1 - _ ൫-1

മു്‌ B =1

लः ©) != 6 മുട്ടട

Average yield from standard tube wells is of the order of
A) 5Ll/s 8) 50 1/8 ©) 500 145 0) 50009

If 60 ppm is concentration of suspended solids present in turbid raw water, then how
much dry solids will be deposited per day in the tank assuming 70% removal in the
basin and average specific gravity of the deposit is 2 ?

A) 112 Kg B) 142 Kg C) 168 Kg D) 192 Kg

Which of the following statements explains the term pyrolysis ?

ಹಿ) Solid-waste is heated in closed containers in oxygen-free atmosphers
B) Solid-wasts is incinerated in presence of oxygen

C) Wastewater is treated with oxygen

D) Dissolved solids from water are removed by distillation

Ozone layer in the upper atmosphere is getting destroyed owing to its reaction with
A) CO, B) Hydrogen peroxide
C) Oxides of Nitrogen D) Chlorofluorocarbons

A combined value of flakiness and elongation index is to be determined for a sample

of aggregates. The sequence in which the two tests are conducted is

A) Elongation index test followed by flakiness index test on the whole sample

B) Flakiness index test followed by slongation index test on the whole sample

C) Flakiness index test followed by elongation index test on the non-flaky aggregates

D) Elongation index test followed by flakiness index test on non-slongated
aggregates

As per IRC : 67 : 2001, a traffic indicating the speed limit on a road should be of
A) Circular shape with White Background and Red Border

B) Triangular shape with White Background and Red Border

C) Triangular shape with Red Background and White Border

D) Circular shape and Red background and White Border

If the jam density is given as ५ and the free flow speed s given as 1 , then men flow
for a linear traffic speed-density model is given by

മു 1/4 8( 1/8 ‏بللا‎ 6) 36 0) 23 ಓಟ

-13