Zero hardness of water is achieved by
(A) using excess alum dosage
(B) ion exchange method
(C) excess lime treatment
(D) using lime soda process
Adv.
For trunk and out fall, the type of sewers generally used is
(A) circular shaped
(B) horse shoe shaped
(C) parabolic shaped
(D) standard egg shaped
For an area developed in haphazard way, the type of layout of water distribution system preferred as
(A) radial system
(B) ring system
(C) grid iron system
(D) dead end system
Which one of the following is not ground water?
(A) from river side radial collector wells
(B) from infiltration gallaries
(C) water from natural springs
(D) rooftop water stored in underground tank
The layer on the top of a filtering medium formed by organic impurities is known as
(A) dirty skin
(B) tube settler
(C) permeable layer
(D) filtering layer
In treatment swimming pool water the filtration system to be used is
(A) slow sand filters
(B) pressure filters
(C) rapid sand filters
(D) any of the above
The sewer which obtains its discharge from two or more sewers is known as
(A) common sewer
(B) outfall sewer
(C) trunk sewer
(D) depressed sewer
The chemical most commonly used to increase speed of sedimentation of sewage is
(A) lime
(B) sodium permanganate
(C) copper sulphate
(D) sulphuric acid
How much planet in the sky
In the above case maximum moment at section 8 m from left support occurs when
(A) First 15 kN load is on the section
(B) Second 15 kN is on the section
(C) 8 kN load is on the section
(D) 10 kN load is on the section
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