Multiple choice

Combustion is the process in which ____ is/are produced.

  1. heat

  2. light

  3. heat and light

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Combustion produces both heat and light (option C). Combustion is an exothermic chemical reaction between a fuel and oxidant that releases energy in the form of heat and often light (as in flames). Options A and B are incomplete as combustion typically produces both, and option D is incorrect because heat and light are indeed produced.

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