At 100�C, water and methylcyclohexane both have vapour pressures of 1 atm. Also

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At 100�C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100�C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150�C is 4.69 atm. At 150�C, the vapour pressure of methylcyclohexane would be expected to be
Options
A. significantly less than 4.69 atm.
B. nearly equal to 4.69 atm.
C. significantly more than 4.69 atm.
D. indeterminate due to lack of data

Correct Answer

significantly more than 4.69 atm.

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Options
A. decreases upwards.
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C. remains same throughout.
D. may decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell.

6. Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop.
Options
A. Tank 1
B. Tank 2
C. Tank 3
D. Tank 4

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