CHEMICAL ENGINEERING | Mass Transfer

Dimension of mass diffusivity is the same as that of

Byadmin August 29, 2022

Question: Dimension of mass diffusivity is the same as that of
[A].

kinematic viscosity

[B].

dynamic viscosity

[C].

surface tension

[D].

pressure

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

Compression ratio of an I.C. engine is the ratio of the

Question: Compression ratio of an I.C. engine is the ratio of the
[A].

clearance volume to the volume swept by piston per stroke.
[B].
volume of air in cylinder before compression to that after compression.
[C].
pressure after compression to that before compression.
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Compression ratio of an I.C. engine is the ratio of the
CHEMICAL ENGINEERING | Chemical Process

__________ glass is used for the manufacture of optical glass.

Question: __________ glass is used for the manufacture of optical glass.
[A].

Pyrex
[B].
Soda
[C].
Flint
[D].
Crooke’s

Answer: Option C

Explanation:

No answer description available for this question.

Read More __________ glass is used for the manufacture of optical glass.
CHEMICAL ENGINEERING | Materials and Construction

Maximum consumption of lead is in the manufacture of

Question: Maximum consumption of lead is in the manufacture of
[A].

storage batteries.
[B].
solder alloys.
[C].
electric cable sheathing.
[D].
lead lined vessels.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Maximum consumption of lead is in the manufacture of
CHEMICAL ENGINEERING | Furnace Technology

If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.

Question: If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.
[A].

sidefired
[B].
underfired
[C].
covered
[D].
recirculating

Answer: Option B

Explanation:

No answer description available for this question.

Read More If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.
CHEMICAL ENGINEERING | Heat Transfer

A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is

Question: A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is
[A].

555
[B].
55.5
[C].
0.55
[D].
0.15

Answer: Option D

Explanation:

No answer description available for this question.

Read More A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is
CHEMICAL ENGINEERING | Mass Transfer

Laboratory determination of the dif-fusivity of vapor is done by __________ method.

Question: Laboratory determination of the dif-fusivity of vapor is done by __________ method.
[A].

wetted wall column
[B].
Gilliland’s
[C].
Winkel mann’s
[D].
Wike’s

Answer: Option C

Explanation:

No answer description available for this question.

Read More Laboratory determination of the dif-fusivity of vapor is done by __________ method.

Similar Posts