CHEMICAL ENGINEERING | Chemical Reaction Engineering

Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in

Byadmin August 11, 2022

Question: Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in
[A].

blood

[B].

saliva

[C].

intestine

[D].

gland

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

Question: Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
[A].

atoms
[B].
neutrons
[C].
nucleons
[D].
electrons

Answer: Option A

Explanation:

No answer description available for this question.

Read More Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
CHEMICAL ENGINEERING | Chemical Reaction Engineering

An isothermal aqueous phase reversible reaction, P R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is

Question: An isothermal aqueous phase reversible reaction, P R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is
[A].

0.80
[B].
1.33
[C].
1.60
[D].
2.67

Answer: Option C

Explanation:

No answer description available for this question.

Read More An isothermal aqueous phase reversible reaction, P R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is
CHEMICAL ENGINEERING | Chemical Reaction Engineering

For a reaction of the type, , the rate of reaction (- rx) is given by

Question: For a reaction of the type, , the rate of reaction (- rx) is given by
[A].

(K1+K1)CX
[B].
(K1+K2+K3)CX
[C].
K1CV – K2CX
[D].
(K1-K2)CX

Answer: Option C

Explanation:

No answer description available for this question.

Read More For a reaction of the type, , the rate of reaction (- rx) is given by
CHEMICAL ENGINEERING | Fluid Mechanics

A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is

Question: A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is
[A].

12 mm/s
[B].
16 mm/s
[C].
24 mm/s
[D].
28 mm/s

Answer: Option B

Explanation:

No answer description available for this question.

Read More A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is
CHEMICAL ENGINEERING | Heat Transfer

In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.

Question: In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.
[A].

once
[B].
twice
[C].
thrice
[D].
four times

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.
CHEMICAL ENGINEERING | Materials and Construction

Muntz metal is a/an alloys of

Question: Muntz metal is a/an alloys of
[A].

magnesium & tin
[B].
ferrous material
[C].
lead & tin
[D].
copper & zinc

Answer: Option D

Explanation:

No answer description available for this question.

Read More Muntz metal is a/an alloys of

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