CHEMICAL ENGINEERING

Question: Name the safety device used to protect the boiler, when the water level falls below a minimum level.
[A].

Blow down valve

[B].

Blow off cock

[C].

Fusible plug

[D].

Safety valve

Answer: Option C

Explanation:

No answer description available for this question.

Question: In an eutectic system, two elements are completely
[A].

soluble in solid state.

[B].

insoluble in liquid state.

[C].

insoluble in both solid & liquid state.

[D].

soluble in liquid state.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Gross & Net calorific values will be the same for
[A].

methane

[B].

propane

[C].

carbon monoxide

[D].

hydrogen

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ is used as a material of construction for the blade of power saw.
[A].

Wrought iron

[B].

Stainless steel

[C].

Mild steel

[D].

High speed steel

Answer: Option D

Explanation:

No answer description available for this question.

Question: All modes of heat transfer i.e., conduction, convection & radiation occur in case of the
[A].

condensation of steam in a partial condenser.

[B].

boiler furnace.

[C].

insulated pipe car raying high pressure steam.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Atomic __________ is a whole number for an element.
[A].

number

[B].

weight

[C].

radius

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: The burnout heat flux in the nucleate boiling regime is not a function of the
[A].

liquid density.

[B].

vapour density.

[C].

temperature difference.

[D].

heat of evaporation.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
[A].

radiation

[B].

conduction

[C].

convection

[D].

both (b) & (c)

Answer: Option A

Explanation:

No answer description available for this question.

Question: Euler number is defined as the ratio of inertia force to __________ force.
[A].

pressure

[B].

elastic

[C].

gravity

[D].

viscous

Answer: Option A

Explanation:

No answer description available for this question.

Question: At the point of boundary layer separation in fluid flow, the
[A].

shear stress is maximum.

[B].

velocity gradient is flat.

[C].

density variation is maximum.

[D].

shear stress is zero.

Answer: Option A

Explanation:

No answer description available for this question.