Answer Posted / chaitanya pithawa

because in centrifugal pump,if the density of the fluid is
higher means viscous fluid,the power consumed is very much
higher and there will be a chance of changing the shape of
the impeller or it may bend.
centrifugal pump rotates very fast and so it wont easily
pump viscous material because higher viscosity of fluid
which increases the friction with the blading.
viscous material need thrust or force to push ahead,so for
that it is more convenient not to use centrifugal pump.

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