CHEMCO Exit Exam • Set 15 Question 12 of 30

In exothermic reactions heat is released due to ______ taking place in them.

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Direct Answer

Option D: Chemical reaction

Exothermic reactions release heat because the formation of new chemical bonds during the reaction releases more energy than was required to break the initial bonds. This net energy release is a defining characteristic of a chemical transformation.

All Options

Cyclic reaction

Irreversible reaction

Physical reaction

Chemical reaction (Correct Answer)

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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