Directions for: The questions consist of two statements each, printed as assertion and reason. While answering these questions you are required to choose any one of the following five responses A. If both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion. B. If both the Assertion and the Reason are true but the Reason is not a correct explanation of Assertion. C. If the Assertion is true but the Reason is false. D. If both the Assertion and the Reason are false. E. If Assertion is false but Reason is true.
Assertion: Absolute values of internal energy of substance cannot be determined; Reason: It is impossible to determine exact valuer or constituent energies of the substances.A) A
B) B
C) C
D) D
E) E
Correct Answer: A
Solution :
It is a fact that absolute value of internal energy of a substance cannot be determined because it is impossible to find exact values of constituent energies (rotational energy, vibrational energy and translational energy of the molecules, electronic energy, nuclear energy, interactional energy of the molecule).
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