Bottom openings 15 cm × 15 cm in the standing baffle wall are provided________________?
		A. 15 cm c/c
B. 22.5 cm c/c
C. 30 cm c/c
D. 50 cm c/c
		A. 15 cm c/c
B. 22.5 cm c/c
C. 30 cm c/c
D. 50 cm c/c
		A. Flow velocity 0.15 m to 0.3 m/sec is kept
B. Depth of 0.9 m to 1.20 m is kept
C. One minute of detention period is kept
D. All the above
		A. Compulsory saving
B. Consumer saving
C. Forced saving
D. All of the above
		A. crest
B. nappe
C. sill
D. weir top
E. contracta
		A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
E. in case of an ideal fluid
		A. the flow is steady
B. the flow is streamline
C. size and shape of the cross section in a particular length remain constant
D. size and cross section change uniform¬ly along length
E. flow occurs at constant fate
		A. Screening
B. Sedimentation
C. Oxidation
D. All the above