Question

Technician A says that vapor has a fixed volume that remains the same when temperature increases. Technician B says that decreasing the temperature on a vapor will increase the pressure. Who is correct? A. Both Technician A and Technician B B. Technician A C. Technician B D. Neither Technician A nor B

Answer 1

Answer is D

Step-by-step explanation:

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Unlike a solid, a vapor has NO fixed volume.

Increasing the temperature of a vapor, while keeping the volume confined in the same space, Increases the pressure.

Answer 2

B. Technician A

Step-by-step explanation:

Technician A is right while B is wrong.

Reason being:

Vapour has got no fixed shape nor volume, vapour occupies space and conforms to the shape of its container. The volume of vapour changes with increase in the amount of temperature.

On the other hand a decrease in temperature decreases the pressure of the water vapour.

The molecules forming the vapour shall contract thereby leading to a lower pressure.