Water (temperature=68f) is pumped from a reservoir to a storage tank atop a building by means of a centrifugal pump. there is 200-ft difference in elevation between the two water surfaces. the inlet pipe at the reservoir is 8ft below the surface, and local conditions are such that the level is substantially constant. the storage tank is vented to the atmosphere and the liquid level is maintained constant. the inlet pipe to storage tank in 6ft below the surface. the piping system consists of 200-ft of 6-in sched. 40 steel pipe containing 2 90o elbows and open gate valve from the reservoir to the pump, 6-in pipe follows the pump for a length of 75-ft after after which pipe size is reduced to 4-in for 250-ft to the tank. the 4-in pipe contains one open gate valve and 3 90o elbows. it is desired to maintain 625 gpm water flow. if the pump-motor set has overall efficiency of 60%
a. determine the kw and hp rating of the pump.
b. what would be the pumping cost be per day if electricity costs p3.00/kwhr?

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

elements make up everything, and they combine to make compounds.

the answer is c

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.