CHEMICAL ENGINEERING

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.

Question: Catalyst used in the ‘catalytic converter’ employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
[A].

alumina

[B].

platinum

[C].

vanadium pentoxide

[D].

iron oxide

Answer: Option B

Explanation:

No answer description available for this question.

Question: Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?
[A].

enthalpy

[B].

relative humidity

[C].

wet bulb temperature

[D].

dew point temperature

Answer: Option D

Explanation:

No answer description available for this question.

Question: The best lubricants for a machine working at high temperature & load is
[A].

grease

[B].

solid lubricant

[C].

animal oils

[D].

mineral oils

Answer: Option B

Explanation:

No answer description available for this question.

Question: A suitable lubricant used for watches is
[A].

metallic soap solution

[B].

grease

[C].

palm oil

[D].

hazel-nut oil

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ is a non volatile film forming constituent of a paint.
[A].

Thinner

[B].

Dryer

[C].

Drying oil

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Electrochemical corrosion can occur, only if __________ is present in contact with metal.
[A].

air

[B].

oxygen

[C].

liquid medium

[D].

gaseous medium

Answer: Option C

Explanation:

No answer description available for this question.