Chemical Engineering Basics

Question: For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.
[A].

250

[B].

500

[C].

1000

[D].

3000

Answer: Option B

Explanation:

No answer description available for this question.

Question: Frost formation on the evaporator tubes in the domestic refrigerators
[A].

can be prevented by proper design.

[B].

decreased compressor power.

[C].

causes heat loss due to poor heat transfer.

[D].

is immaterial.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Out of the following the refractive index is the highest for
[A].

glass

[B].

diamond

[C].

brine

[D].

kerosene

Answer: Option B

Explanation:

No answer description available for this question.

Question: Catalyst used in the catalytic converter employed in automobiles to convert CO into CO and for complete oxidation of un-burnt hydrocarbons is
[A].

nickel

[B].

cobalt

[C].

vanadium

[D].

platinum

Answer: Option D

Explanation:

No answer description available for this question.

Question: A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.
[A].

neutral

[B].

ideal

[C].

buffer

[D].

zero pH

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dew point temperature always gives an indication of the __________ of the moist air.
[A].

dryness

[B].

moisture content

[C].

coolness

[D].

latent heat

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ temperature remains constant during adiabatic saturation process of unsaturated air.
[A].

Dew point

[B].

Dry bulb

[C].

Wet bulb

[D].

None of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
[A].

refrigerant cooling

[B].

evaporator

[C].

condenser

[D].

throttling

Answer: Option C

Explanation:

No answer description available for this question.

Question: Air intake for an air compressor should be preferably taken from
[A].

a site, where cooling towers are located nearby.

[B].

a site, where open coal yard in located nearby.

[C].

an air conditioned room maintained at a temperature of 18°C.

[D].

an outside atmosphere at 10°C.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Killed steels
[A].

are free from oxygen.

[B].

contain not even traces of sulphur & phosphorous.

[C].

are produced by L.D. process only.

[D].

contain minimum impurity level.

Answer: Option A

Explanation:

No answer description available for this question.