CHEMICAL ENGINEERING | Chemical Engineering Basics

A hot short metal is

Byadmin July 30, 2022

Question: A hot short metal is
[A].

hard when hot.

[B].

brittle when cold.

[C].

brittle when hot.

[D].

brittle under all conditions.

Answer: Option C

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Fuels and Combustion

Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.

Question: Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.
[A].

sensible
[B].
latent
[C].
sensible and latent
[D].
none of these

Answer: Option C

Explanation:

No answer description available for this question.

Read More Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.
Chemical Engineering Basics

Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?

Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?

A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders

Read More Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?
CHEMICAL ENGINEERING | Mass Transfer

Experimental determination of __________ is done by wetted wall column method.

Question: Experimental determination of __________ is done by wetted wall column method.
[A].

diffusion co-efficient
[B].
mass transfer co-efficient
[C].
NTU
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Experimental determination of __________ is done by wetted wall column method.
CHEMICAL ENGINEERING | Heat Transfer

For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)

Question: For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)
[A].

NPr
[B].
NPr1/3
[C].
NPr-1
[D].
NPr-1/3

Answer: Option B

Explanation:

No answer description available for this question.

Read More For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)
CHEMICAL ENGINEERING | Materials and Construction

Inconel is an alloy of

Question: Inconel is an alloy of
[A].

tin, zinc and nickel
[B].
iron, nickel and chromium
[C].
copper and nickel
[D].
copper and tin

Answer: Option B

Explanation:

No answer description available for this question.

Read More Inconel is an alloy of
CHEMICAL ENGINEERING | Fluid Mechanics

In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is

Question: In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is
[A].

0.5
[B].
0.84
[C].
1.84
[D].
1.25

Answer: Option C

Explanation:

No answer description available for this question.

Read More In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is

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