Compressibility co-efficient for an absolutely compressible cake is (A) 0 (B) 1 (C) 0 to 1 (D) ∞

Compressibility co-efficient for an absolutely compressible cake is
(A) 0
(B) 1
(C) 0 to 1
(D) ∞
by

1 Answer

Answer :

(B) 1
by

Related questions

Range of compressibility co-efficient of the commercial compressible cake obtained in filtration operation is (A) 0.01 to 0.1(B) 0.1 to 0.3 (C) 0.2 to 0.8 (D) 0.2 to 0.4

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Last Answer : (C) 0.2 to 0.8

Addition of filter aid to the slurry before filtration is done to __________ of the cake. (A) Increase the porosity (B) Increase the compressibility co-efficient (C) Decrease the porosity (D) Decrease the compressibility co-efficient

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Last Answer : (A) Increase the porosity

Pick out the wrong statement. (A) The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonian fluids is (D/4L). ∆p (B) In the equation, T. gc = k. (du/dy) n the value of 'n' for pseudoplastic and Dilatant fluid are < 1 and >1 respectively (C) Shear stress for Newtonian fluid is proportional to the rate of shear in the direction perpendicular to motion (D) With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids

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Joule-Thomson Co-efficient at any point on the inversion curve is (A) ∞ (B) +ve (C) 0 (D) -ve

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Last Answer : (C) 0

What is the value of Joule-Thomson co-efficient for an ideal gas? (A) +ve (B) -ve (C) 0 (D) ∞

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Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is (A) 0 (B) ∞ (C) +ve (D) -ve

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The effectiveness factor for large value of Thiele modulus [L√(K/D1 )] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2 /second). (A) L √(K/D1 ) (B) 1/[L√(K/D1 )] (C) 1 (D) ∞

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A compressible cake has the (A) Maximum porosity at the upstream side (B) Maximum porosity at the filter medium (C) Same porosity throughout the cake thickness (D) None of these

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Last Answer : (A) Maximum porosity at the upstream side

The porosity of a compressible cake is(A) Minimum at the filter medium(B) Minimum at the upstream face(C) Maximum at the filter medium(D) Same throughout the thickness of cake

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The specific cake resistance for compressible sludges is a function of the pressure drop (A) Over cake (B) Over medium (C) Overall (D) None of these

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With increase in the pressure drop across the cake, the specific cake resistance for the compressible sludge (A) Increases (B) Decreases (C) Remains constant (D) Increases linearly

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A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate. (A) Compressible cakes and laminar (B) Incompressible cake and laminar (C) Compressible cake and turbulent (D) Incompressible cake and turbulent

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Pick out the wrong statement. (A) For the compressible cake, voidage & the specific resistance of the cake can be assumed to be constant (B) Cake resistance is independent of the pressure drop (C) Crushing of explosive materials are done by employing dry-grinding (D) Gyratory crusher is a coarse crusher

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Last Answer : (C) A, B, E

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Potential flow is the flow of (A) Compressible fluids with shear (B) Compressible fluids with no shear (C) Incompressible fluids with shear (D) Incompressible fluids with no shear

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What is the thermal conductivity of a perfect heat insulator? (A) Zero (B) One (C) ∞ (D) Between 0 and ∞

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Absorptivity and reflectivity of a perfect black body are respectively (A) 1 and 0 (B) 0 and 1 (C) 1 and ∞ (D) 0 and 0.5

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Last Answer : (B) 0

What is the dispersion number for a plug flow reactor? (A) 0 (B) ∞ (C) 1 (D) -1

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If Thiele modulus is __________, then the pore diffusion resistance in a catalyst may be considered as negligible. (A) 0 (B) ∞ (C) < 0.5 (D) > 0.5

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