CHEMICAL ENGINEERING

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.

Question: Lubricants can be used to
[A].

transmit power hydraulically.

[B].

form a seal in compressors.

[C].

remove contaminants by flushing and to insulate transformers, switchgears etc.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Lubrication is done to control
[A].

friction

[B].

wear

[C].

temperature

[D].

all (a), (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: The atmospheric temperature during melting of ice/snow (in the atmosphere)
[A].

decreases

[B].

increases

[C].

remains same

[D].

may increase or decrease ; depends on the altitude where snow melts

Answer: Option A

Explanation:

No answer description available for this question.

Question: Dowtherm is a
[A].

high temperature heating medium (a petroleum product).

[B].

product of coal tar distillation.

[C].

very heat sensitive material.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.