The (i)_____of a syste can be changed by transfer of heat from the surrounding to the system of cive-verse without expenditure of (ii)_____.
Identify (i) and (ii) in order to complete the above statement.
A. (i)-enthalpy, (ii)-work
B. (i)-internal energy, (ii) heat
C. (i)-enthalpy, (ii)- heat
D. (i)-internal energy, (ii)-work

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Correct Answer - D
The internal energy of a system can be changed by transfer of heat from the surroundings to the system or vice-versa wihtout expenditure of work.

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