1. As consolidation occurs, the rate _____

a) Increases

b) Decreases

c) Remains same

d) Has no change

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2. The porosity of the particle is ______ at the bottom.

a) Greatest

b) Smallest

c) Broader

d) Same

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3. Find the rate of sedimentation, if height of sludge and final height are 5.50 m and 2 m, assume the constant b to be 2?

a) 7

b) 5.5

c) 3.5

d) 2

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_{F}) = 2 (5.5-2) = 3*3.5 = 7 kg

^{2}m/s.

4. The shape of vessel has ___ effect on rate of sedimentation.

a) Devastating

b) Vast

c) Little

d) Most

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5. The behavior of concentrated suspensions was analyzed by _____

a) Kynch

b) Newton

c) Einstein

d) Duckworth

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6. As the concentration approaches the limiting value, sedimentation velocity tends _______

a) Unity

b) Zero

c) Infinity

d) Finalized

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7. Kynch showed that the settling rate and concentration of that zone limits the capacity.

a) True

b) Fasle

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8. What does the below equation represent?

a) Visual velocity

b) Final velocity

c) Upward velocity

d) Lower velocity

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9. What does the below equation represent?

a) Tangent to settling velocity

b) Angle of nip

c) Angle of settling

d) Sedimentation line

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_{L}is the slope of the tangent to the curve, this tangent intersects the vertical axis at Z=Z

_{1}.

10. If slope (m) = – tan Ө, therefore

a) V_{L} = 0

b) V_{L} = Z_{L}

c) V_{L} = – tan Ө

d) V_{L} = – tan α

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_{I}– Z

_{L}= – Өi tan Ө, hence V

_{L}can be equal to – tan α.