_____________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C ?

Question: In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that
[A].

compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller.

[B].

maintaining vacuum on tube side is more difficult than that on the shell side.

[C].

water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam.

[D].

condenser can act as a storage unit for condensed steam.

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ of air does not increase with increase in temperature.
[A].

Density

[B].

Thermal diffusivity

[C].

Viscosity

[D].

Thermal conductivity

Answer: Option A

Explanation:

No answer description available for this question.

Question: With increase in impurities in metals, their corrosion resistances
[A].

increase

[B].

decrease

[C].

remain same

[D].

may increase or decrease ; depending on the type of metal

Answer: Option B

Explanation:

No answer description available for this question.

Question: In multipass welds, shot peening is done after each pass to
[A].

close the surface porosity.

[B].

break the continuity of columnar grains.

[C].

flatten the weldment.

[D].

introduce texture in the weld.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A material lacking in toughness is usually termed as
[A].

plastic

[B].

malleable

[C].

brittle

[D].

ductile

Answer: Option C

Explanation:

No answer description available for this question.