The suitable method for disinfection of swimming pool water is
(A) chlorination
(B) by using potassium permanganate
(C) ultra violet rays treatment
(D) lime treatment
Which one of the following would contain water with the maximum amount of turbidity?
(A) wells
(B) rivers
(C) oceans
(D) lakes
The rainfall at any place may be determined by
(A) its intensity
(B) its frequency
(C) its direction
(D) all the above
A garden developed over top of surface water tank is known as
(A) water tank garden
(B) hanging garden
(C) municipal garden
(D) none of these
Temporary hardness in water is caused by the presence of
(A) chlorides of Ca and Mg
(B) bicarbonate of Ca and Mg
(C) sulphates of Ca and Mg
(D) nitrates of Ca and Mg
Bacteria that need oxygen to live are known as
(A) pathogenic bacteria
(B) facultative bacteria
(C) anaerobic bacteria
(D) aerobic bacteria
Suspended impurities in water is
(A) algae
(B) bacteria
(C) silts
(D) all of these
A timber dam is a
(A) detention dam
(B) rigid dam
(C) non-rigid dam
(D) non-overflow dam
Stone ware pipes are
(A) specially suited to pressure pipes
(B) hydraulically efficient because of their smooth interior surface
(C) highly impervious
(D) highly resistant to sulphide corrosion
Process of killing pathogenic bacteria from water is known as
(A) sedimentation
(B) disinfection
(C) coagulation
(D) filtration
Bacteria that survive in the absence of oxygen are known as
(A) anaerobic bacteria
(B) aerobic bacteria
(C) facultative bacteria
(D) pathogenic bacteria
A pipe sunk into the well to tap underground water is called
(A) artesian well
(B) open well
(C) infiltration well
(D) tube well
Dry water flow in a combined sewer, is
(A) storm water
(B) inclusive of domestic and industrial sewage but excludes storm water
(C) industrial sewage
(D) domestic sewage
Aerosol is
(A) diffused liquid particles
(B) carbon particles of microscopic size
(C) dispersion of small solid or liquid particles in gaseous media
(D) finely divided particles of ash
All major and important gravity dams are nowadays constructed with
(A) concrete
(B) earth and rock fill
(C) brick masonry
(D) stone masonry
A circular sewer section is preferred to because
(A) it provides maximum hydraulic mea depth
(B) it provides maximum area for a given perimeter
(C) it is cheaper in construction
Cowl is provided at
(A) first step in manhole
(B) upper end of the manhole
(C) lower end of ventilating column
(D) upper end of ventilating column
The flowing river water in natural drainage gets cleaned by
(A) photosynthesis
(B) self purification
(C) oxidation
All Questions
Physics
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Organic Chemistry
Inorganic Chemistry
Physical Chemistry
Algebra
Geometry
Evaluate :
∫2xcos(x2 – 5).dx
If the sum of 14 terms of an A. P is 1050 its first term is 10 find 20th term ?
Diagonals of a quadrilateral 30 cm long and the perpendicular drawn from the opposite vertices are 5.6 and 7.4 cm find the area of the quadrilateral.with steps ?
Find the sum of the integers between 10 and 30 including 10 and 30 which are not divisible by 3.
A cyclic quadrilateral pqrs are where PS equals to PQ and angle SPQ is 70 degree find angle psq