CSIR-NET Chemical Science: Most Important Questions of Thermodynamics!!!

By Neetesh Tiwari|Updated : July 29th, 2021

Hello Gradians,

It will not be a new thing for you if we say that Gradeup is considered the synonym for success. For the past 5 years, At BYJU'S Exam Prep, we have been promoting talented candidates of the CSIR-NET category to the path of success. As a result, BYJU'S Exam Prep has been an integral part of the preparation journey of many Aspirants.

As we all know, the CSIR-NET exam is very near, and there is no time left for revision. At this point, you must be seeking some ready-made authentic short revision notes or some important questions to practice just before the exam. How will you react if you get all these study materials in one place? It will be beneficial for you at this time, right! We at BYJU'S Exam Prep comes up with Important Questions on Thermodynamics for Chemical Sciences to help you score good marks, which our experienced subject-matter experts have meticulously designed. So what are you waiting for? Scroll down the article below and start study for the CSIR NET Exam; these questions will be fruitful during last-minute revision to fetch more marks in the exams. Students can also download it as a PDF file and save it for future purposes.

We have been providing short study notes for the Chemical Science subject, which can be checked here. We have experienced immense love and support from all of you through these short notes in the CSIR-NET category, and we hope you all continue to support us in the same way!

Hello Gradians,

It will not be a new thing for you if we say that Gradeup is considered the synonym for success. For the past 5 years, At BYJU'S Exam Prep, we have been promoting talented candidates of the CSIR-NET category to the path of success. As a result, BYJU'S Exam Prep has been an integral part of the preparation journey of many Aspirants.

As we all know, the CSIR-NET exam is very near, and there is no time left for revision. At this point, you must be seeking some ready-made authentic short revision notes or some important questions to practice just before the exam. How will you react if you get all these study materials in one place? It will be beneficial for you at this time, right! We at BYJU'S Exam Prep comes up with Important Questions on Thermodynamics for Chemical Sciences to help you score good marks, which our experienced subject-matter experts have meticulously designed. So what are you waiting for? Scroll down the article below and start study for the CSIR NET Exam; these questions will be fruitful during last-minute revision to fetch more marks in the exams. Students can also download it as a PDF file and save it for future purposes.

We have been providing short study notes for the Chemical Science subject, which can be checked here. We have experienced immense love and support from all of you through these short notes in the CSIR-NET category, and we hope you all continue to support us in the same way!

Important Questions on Thermodynamics

1. For an ideal gas, the isochoric temperature-based pressure change coefficient is equal to:

3. Which of the following relations is correct?

4. The value of isothermal compressibility factor at the critical point is,

A. Zero

B. Infinite

C. 1

D. Any number

5A gas expands from a volume of 3.0 dm3 to 5.0 dm3 against a constant external pressure of 3.0 atm. The work done during the expansion is used to heat 10.0 ml of water of temperature 290.0K. Calculate the final temperature of the water.

(Specific heat of water = 4.184 Jg–1K–1)

A. 0.81 K 

B. 0.81º

C. 20.67º

D. 273 K

6. Calculate the enthalpy change on freezing of 1.0 mol of water at 10ºC to the ice at –10ºC.

= 6.03 kJ mol–1 at 0ºC

CP[H2O(l)] = 75.3 J mol–1k–1  

CP[H2O(s)] = 36.8 J mol–1k–1

A.  6.26 kJ mol–1

B. 0 

C. –7.15 kJ mol–1

D. 7.15 kJ mol–1

7. Vapor pressures of water at 95ºC and 100ºC are 634 and 760 mm respectively. Calculate the molar heat of vaporization, of water between 95ºC and 100ºC.

A. –41.363 kJ mol–1 

B. 41.363 kJ mol–1

C. 63.46 kJ mol–1 

D. –63.46 kJ mol–1

8. How many calories are required to heat 40 grams of argon from 40ºC to 100ºC at constant volume? {R = 2 Call mol k}

A. 120

B. 2400

C. 1200

D. 180

9. The molar heat capacity of water in equilibrium with ice at constant pressure is:

A. 0 

B. 40.50 KJ K–1 mol–1

C. Infinity

D. 75.48 JK–1 mol–1

10. For the reaction A B,   = +24 kJ/mol for the reaction B C, = –18 kJ/mole the decreasing order of enthalpy of A, B, C follows the order:

A. A, B, C

B. B, C, A

C. C, B, A

D. C, A, B

Answer Keys

 

  1. A
  2. D
  3. B
  4. B
  5. B
  6. C
  7. B
  8. D
  9. C
  10. B

Solutions

Solution 1: 

Solution 2: 

Solution 3: 

 

Solution 4: 

 

Solution 5: 

 

Solution 6: 

 

Solution 7: 

 

Solution 8: 

For a monatomic gas like Ar, CV = 3 Cal mol–1 and CP = 5 Cal mol–1.

As 40 g of argon = 1 mole

Hence, the heat is required to raise the temperature from 40ºC to 100ºC at constant volume

= 3 × (100 – 40) = 180 Cal. 

Solution 9: 

 

Solution 10: 

 

Most Important Questions on Thermodynamics - Download PDF Now

 

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Neetesh TiwariNeetesh TiwariMember since Aug 2020
Working Experience of more than 2 years in Education Industry. Currently associated to CSIR-NET at Gradeup. Guiding students to crack the exam and fulfil their dreams.
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