Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is A. (i) and (ii) B. (i) and (iv) C. (ii) and (iii) D. (ii) and (iv)

The correct answer is A. (i) and (ii).

Steady flow is a type of fluid flow in which the fluid velocity at any point in the flow field does not change with time. Uniform flow is a type of fluid flow in which the fluid velocity at any point in the flow field is the same in all directions.

Flow at constant rate through a tapering pipe is a type of steady flow, but it is not a type of uniform flow. This is because the fluid velocity at any point in the flow field is not the same in all directions. The fluid velocity is higher at the center of the pipe than it is at the walls of the pipe.

Option (iii), unsteady flow, is incorrect because the flow rate is constant. Option (iv), non-uniform flow, is incorrect because the flow is steady.