CHEMICAL ENGINEERING | Furnace Technology

The amount of combustible escaping uncon-sumed from the furnace, depends upon the

Byadmin August 19, 2022

Question: The amount of combustible escaping uncon-sumed from the furnace, depends upon the
[A].

air supplied and furnace temperature.

[B].

burner design (thoroughness of mixing versus stratification).

[C].

air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction).

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Fuels and Combustion

Fuel combustion is never cent per cent efficient due to

Question: Fuel combustion is never cent per cent efficient due to
[A].

incomplete combustion
[B].
dry gas/stack gas loss
[C].
moisture loss
[D].
all (a), (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Read More Fuel combustion is never cent per cent efficient due to
CHEMICAL ENGINEERING | Chemical Engineering Basics

With increase in temperature, the electrical conductivity of semiconductors

Question: With increase in temperature, the electrical conductivity of semiconductors
[A].

increases.
[B].
decreases.
[C].
remain constant.
[D].
either (a) or (b), depends on the type of semi-conductor.

Answer: Option A

Explanation:

No answer description available for this question.

Read More With increase in temperature, the electrical conductivity of semiconductors
CHEMICAL ENGINEERING | Fuels and Combustion

Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.

Question: Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.
[A].

550
[B].
750
[C].
950
[D].
1150

Answer: Option C

Explanation:

No answer description available for this question.

Read More Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.
CHEMICAL ENGINEERING

Secondary hardening in steels arises out of the _____________________?

Secondary hardening in steels arises out of the _____________________?

A. Precipitation of fine alloy carbides at high temperatures
B. Refinement of ferrite grain size by working
C. Decomposition of retained austenite upon heat treatment
D. Precipitation of complex inter-metallic upon heat treatment

Read More Secondary hardening in steels arises out of the _____________________?
CHEMICAL ENGINEERING | Mass Transfer

__________ is the separation technique used for desalination of sea water.

Question: __________ is the separation technique used for desalination of sea water.
[A].

Thermal diffusion
[B].
Reverse osmosis
[C].
Adsorption
[D].
absorption

Answer: Option B

Explanation:

No answer description available for this question.

Read More __________ is the separation technique used for desalination of sea water.
CHEMICAL ENGINEERING | Fluid Mechanics

Boundary layer separation is characterised by one of the conditions given below, where ‘Re’ is the Reynolds number for the flow. Select the appropriate conditions.

Question: Boundary layer separation is characterised by one of the conditions given below, where ‘Re’ is the Reynolds number for the flow. Select the appropriate conditions.
[A].

Re << 1, accelerating flow
[B].
Re >> 1, accelerating flow
[C].
Re << 1, decelerating flow
[D].
Re >>1, decelerating flow

Answer: Option D

Explanation:

No answer description available for this question.

Read More Boundary layer separation is characterised by one of the conditions given below, where ‘Re’ is the Reynolds number for the flow. Select the appropriate conditions.

Similar Posts