Water having pH value as 6, is alkaline acidic neutral none of these.

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Water Supply Engineering problems

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1. Pickup the incorrect statement from the following :
Options
A. The invert of pressure conduit is independent of the grade of the hydraulic gradient line
B. The pressure conduits may be taken uphill upto a maximum height of 8.3 m
C. Aqueducts and tunnels sections are generally kept circular
D. None of these.

2. While selecting the location of an intake for collecting surface water, the factor considered, is
Options
A. The intake point should be near as far as possible to the treatment plant
B. The intake point should be in purer zone of the water source
C. The intake point should be upstream of the point of disposal of waste water
D. The intake point in meandering rivers should be on concave banks
E. All the above;

4. Pick up the correct statement from the following :
Options
A. Air lift pumps are generally used for pumping water from deep wells
B. Jet pumps are generally used for pumping water from small wells
C. The hydraulic ram works on the principle of water hammer
D. Rotary pumps are provided cams which rotate in opposite direction
E. all the above.

8. Perched acquifers are generally found
Options
A. on the surface of the ground
B. below the surface of the ground but above water table
C. below the water table
D. all the above.

9. Water to the consumers may be supplied from
Options
A. infiltration galleries connected to sump well
B. infiltration well dug out on the banks of rivers
C. ranney wells sunk to the water level
D. all the above.

10. A strainer type well sunk through three pervious layers intervened by three impervious aquicludes, draws water from
Options
A. top most pervious layer
B. central pervious layer
C. lowest pervious layer
D. all the pervious layers.

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