Question

The increase in entropy of a system represents ______ of energy.
1. degradation
2. upgradation
3. generation
4. preservation

Answer 1

Correct Answer - Option 1 : degradation

Explanation:

Entropy:

• Entropy is a measure of the energy of a system that is unavailable for doing useful work. Increase in entropy of a system leads to increase in randomness and degradation of energy.
• No process between two equilibrium states is possible if it would result in a decrease in the total entropy of the system and surroundings.
• Since entropy is a point function that depends only on states i.e. independent of the path followed..
• So the change of entropy will be zero when the process undergoes a complete cycle (where initial state and final state is the same)

Principle of Increase of Entropy:

• The entropy of the isolated system is the measure of the irreversibility undergone by the system.
• More is the irreversibility more increase is the entropy of the system or dgradation of energy. As such the reversible process is an ideal process and it never really occurs. This means the certain amount of the irreversibility is always there in the system, this also means that the entropy of the isolated system always goes on increasing, it never reduces. Here let us keep in mind that isolated system can always be formed by including any system and surroundings within a single boundary.