Chemical Engineering Basics

Question: Carburettor in a spark ignition engine is used to
[A].

mix air-fuel in the desired ratio.

[B].

maintain a constant speed at varying loads.

[C].

adjust the stroke length.

[D].

increase the compression ratio.

Answer: Option A

Explanation:

No answer description available for this question.

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.

Question: Air-petrol ratio in an automotive petrol engine is around
[A].

14 : 1

[B].

22 : 1

[C].

25 : 1

[D].

4 : 1

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ stress can not be sustained by a fluid in equilibrium.
[A].

Shear

[B].

Tensile

[C].

Compressive

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cassiterite is an ore of
[A].

tin

[B].

lead

[C].

molybdenum

[D].

chromium

Answer: Option A

Explanation:

No answer description available for this question.

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.

Question: ‘GASOHOL’ widely used in Brazil as a motor fuel is a mixture of alcohol and
[A].

petrol.

[B].

LPG.

[C].

light hydrocarbon gases (e.g. butane or propane).

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A material expanding freely due to heating will develop __________ stress.
[A].

no

[B].

compressive

[C].

tensile

[D].

thermal

Answer: Option A

Explanation:

No answer description available for this question.

Question: In inventory control theory, the economic order quantity (EOQ) is the
[A].

lot size corresponding to break even analysis.

[B].

average level of inventory.

[C].

optimum lot size.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ is not used as the control rod material in a nuclear reactor.
[A].

Cobalt

[B].

Hafnium

[C].

Cadmium

[D].

Boron

Answer: Option A

Explanation:

No answer description available for this question.