Solved UPSC CDS/OTA Question
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Q · Chemical EquationsMedium · 45s
Which statement is true about decomposition reactions? 1. They involve the breakdown of a single compound. 2. They are mostly endothermic in nature. 3. Thermal decomposition requires heat.
TopicChemical Equations
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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All three are correct. Decomposition reactions break compounds and usually need energy input (heat, light, or electricity).
Final Answer: Option D — 1, 2 and 3