Correct statements about internal energy are
A) The absolute value of internal energy cannot be determined
B) The internal energy of one mole of a substance is same at any temperature
C) The measurement of heat change during a reaction by bomb calorimeter is equal to internal energy change
D) Internal energy is an extensive property

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A, B and C only

A, C and D only

B, C and D only

A, B and D only

answer is B.

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Detailed Solution

A--correct, B--false…..Internal energy is a function of temperature;

C…correct….bomb calorimeter is a closed vessel, therefore the measurement of heat change during a reaction by bomb calorimeter is equal to internal energy change

D…correct…internal energy depends on quantity of substance;

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