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Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' and
the other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Codes:
(a) Both A and R are individually true and R is the correct explanation of A.
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Assertion (A): The changes in heat and work cannot be expressed as difference between the
end states.
Reason (R) : Heat and work both are exact differentials.
  • a)
    A
  • b)
    B
  • c)
    C
  • d)
    D
Correct answer is option 'C'. Can you explain this answer?
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Direction: Each of the next consists of two statements, one labeled as...
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Direction: Each of the next consists of two statements, one labeled as...
Understanding the Assertion (A)
The Assertion states that "the changes in heat and work cannot be expressed as a difference between the end states." This is true because heat and work are processes, not state functions. They depend on the path taken during a thermodynamic process, rather than just the initial and final states.
Understanding the Reason (R)
The Reason claims that "heat and work both are exact differentials." This is false. Exact differentials are associated with state functions, which can be defined solely by their endpoints. Since heat and work are not state functions but path-dependent, they cannot be classified as exact differentials.
Analyzing the Relationship Between A and R
- Assertion (A) is true: Changes in heat and work are indeed path-dependent.
- Reason (R) is false: Heat and work are not exact differentials.
Conclusion
Given the analysis:
- Assertion (A) is true, while Reason (R) is false.
- Therefore, the correct answer is option 'C': A is true but R is false.
This distinction is crucial in thermodynamics as it highlights the difference between state functions (like internal energy) and non-state functions (like heat and work). Understanding these concepts is fundamental for mechanical engineering students and professionals.
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Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' andthe other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:Codes:(a) Both A and R are individually true and R is the correct explanation of A.(b) Both A and R are individually true but R is not the correct explanation of A(c) A is true but R is false(d) A is false but R is trueAssertion (A): The changes in heat and work cannot be expressed as difference between theend states.Reason (R) : Heat and work both are exact differentials.a)Ab)Bc)Cd)DCorrect answer is option 'C'. Can you explain this answer?
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Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' andthe other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:Codes:(a) Both A and R are individually true and R is the correct explanation of A.(b) Both A and R are individually true but R is not the correct explanation of A(c) A is true but R is false(d) A is false but R is trueAssertion (A): The changes in heat and work cannot be expressed as difference between theend states.Reason (R) : Heat and work both are exact differentials.a)Ab)Bc)Cd)DCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' andthe other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:Codes:(a) Both A and R are individually true and R is the correct explanation of A.(b) Both A and R are individually true but R is not the correct explanation of A(c) A is true but R is false(d) A is false but R is trueAssertion (A): The changes in heat and work cannot be expressed as difference between theend states.Reason (R) : Heat and work both are exact differentials.a)Ab)Bc)Cd)DCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Each of the next consists of two statements, one labeled as the 'Assertion (A)' andthe other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:Codes:(a) Both A and R are individually true and R is the correct explanation of A.(b) Both A and R are individually true but R is not the correct explanation of A(c) A is true but R is false(d) A is false but R is trueAssertion (A): The changes in heat and work cannot be expressed as difference between theend states.Reason (R) : Heat and work both are exact differentials.a)Ab)Bc)Cd)DCorrect answer is option 'C'. Can you explain this answer?.
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