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

Questions 28–30 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 10 of 22

Question 18

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CHMCQ1 markNeeds review
Ratio of momentum diffusivity to thermal diffusivity is
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Question 19

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CHMCQ1 markNeeds review
Mole fraction and activity coefficient of component 1 in a binary liquid mixture are

and

, respectively.

is excess molar Gibbs energy of the mixture,

is universal gas constant and

is absolute temperature of the mixture. Which one of the following is always true?
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Question 20

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CHMCQ1 markNeeds review
Leidenfrost phenomenon refers to
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