Chemical Equations · UPSC CDS/OTA · Question 27 of 30

Chemical Equations – Question 27

Step-by-step solution. Chemical Equations for UPSC CDS/OTA.

Topic
Chemical Equations
Subject
General Studies
Difficulty
Medium
Solve Time
45–60 sec

Solved UPSC CDS/OTA Question

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Q · Chemical EquationsMedium · 45s

Which of these is NOT an endothermic reaction?

TopicChemical Equations
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min

Step-by-Step Solution

The complete worked solution.

Every step explained — no skipped algebra.

Combustion is exothermic.

Final Answer: Option C — Combustion of LPG
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Chemical Equations Question 27 – UPSC CDS/OTA