Question

Total internal energy of a system can never be evaluated but the change in internal energy can be determined by 1st law of thermodynamics.
If true enter 1, else enter 0.

Answer 1

The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but cannot be created or destroyed.

Total internal energy of a system can never be evaluated but the change in internal energy can be determined by 1st law of thermodynamics.

The first law is often formulated by stating that the change in the internal energy of a closed system is equal to the amount of heat supplied to the system, minus the amount of work done by the system on its surroundings.

Thus the statement is true. (1)