When an isolated thermodynamic system executes a process ___________________?

Question: Expansion device used in a window air-conditioner is a/an
[A].

automatic expansion valve.

[B].

thermostatic expansion valve.

[C].

float valve.

[D].

capillary tube.

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ joint is mostly used for joining pipes carrying water at low pressure.
[A].

Nipple

[B].

Socket

[C].

Union

[D].

Bell and spigot

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ is a special constituent of chlorophyll without which photosynthesis is not possible.
[A].

Calcium

[B].

Nitrogen

[C].

Phosphorous

[D].

Hydrogen

Answer: Option B

Explanation:

No answer description available for this question.