The processes of removal of particles in a rapid sand filter with their description is given in the table. Process Description (i) Straining P: Removes only particles in the water large enough to get caught in the pores of the filter (ii) Sedimentation Q: Larger and heavier particles do not follow the fluid streamline around the sand grain and settle on the grain (iii) Interception R: Particles that do follow the streamline, but are too large and are caught because they brush up against the sand grains (iv) Diffusion S: Very small particles are experiencing Brownian motion and may collide with the sand grains by chance Select the correct match.

Question

The processes of removal of particles in a rapid sand filter with their description is given in the table. Process Description (i) Straining P: Removes only particles in the water large enough to get caught in the pores of the filter (ii) Sedimentation  Q: Larger and heavier particles do not follow the fluid streamline around the sand grain and settle on the grain (iii) Interception  R: Particles that do follow the streamline, but are too large and are caught because they brush up against the sand grains (iv) Diffusion  S: Very small particles are experiencing Brownian motion and may collide with the sand grains by chance Select the correct match.

cdquestions Admin · Accepted Answer

The correct answer is (C) : Mycobacterium bovis

Answer

i- S; ii-P; iii-Q; iv-R

Answer

i-Q; ii-R; iii-S; iv-P

Answer

i-R; ii- S; iii- P; iv-Q

Answer

i-P; ii-Q; iii-R; iv-S

The Correct Option is D

Solution and Explanation

Top Questions on Wastewater Treatment Plant (WWTP)

Questions Asked in GATE ES exam

Process	Description
(i) Straining	P: Removes only particles in the water large enough to get caught in the pores of the filter
(ii) Sedimentation	Q: Larger and heavier particles do not follow the fluid streamline around the sand grain and settle on the grain
(iii) Interception	R: Particles that do follow the streamline, but are too large and are caught because they brush up against the sand grains
(iv) Diffusion	S: Very small particles are experiencing Brownian motion and may collide with the sand grains by chance