GATE CH 2020 Paper 1 — page 17

Complete GATE CH 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 49–51 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 17 of 22

A pure gas obeys the equation of state given by

where

is the pressure,

is the absolute temperature,

is the molar volume of the gas,

is the universal gas constant, and

is a parameter independent of

and

. The residual molar Gibbs energy,

, of the gas is given by the relation

where

is the compressibility factor and the integral is evaluated at constant

. If the value of

, the residual molar enthalpy (in J mol

) of the gas at 100 kPa and 300 K is

Your answerChoose one option.

100

300

249

3000

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Consider one mole of an ideal gas in a closed system. It undergoes a change in state from L to N through two different non-isothermal processes, as shown in the P-V diagram (where

is the pressure and

is the molar volume of the gas). Process I is carried out in a single step, namely LN, whereas process II is carried out in two steps, namely LM and MN. All the steps are reversible.

The net heat flowing into the system for process I is

, and that for process II is

. The value of

(in J) is

Diagram for Chemical Engineering question 40

Your answerChoose one option.

250

500

1000

1500

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A fluid is heated from 40 °C to 60 °C in a countercurrent, double pipe heat exchanger. Hot fluid enters at 100 °C and exits at 70 °C. The log mean temperature difference, i.e. LMTD (in °C), is __________ (round off to 2 decimal places).

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2020 · Paper 1

Question 39

Question 40

Question 41