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Doctors Medicines MCQs Q&A

  1. Change in state
  2. Change in colour
  3. Change in temperature
  4. All of the above
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1 Answers

Option 4 : All of the above

The correct option is 4 i.e. All the statements are correct.

  • A chemical reaction is a process in which one or more substances known as the reactants are converted into one or more different substances.
  • A reaction is said to take place when there is either change in state, change in colour or change in temperature.
  • Examples of a reaction involving temperature are:
    • Endothermic reaction: Heat is absorbed from the atmosphere.
    • Exothermic reaction: Heat is released in the atmosphere.
  •  A catalyst is a substance that is added to a reaction to increase the reaction rate of the reaction without getting consumed in the process.
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