Mixtures and Compounds · UPSC CDS/OTA · Question 20 of 30

Mixtures and Compounds – Question 20

Step-by-step solution. Mixtures and Compounds for UPSC CDS/OTA.

Topic
Mixtures and Compounds
Subject
General Studies
Difficulty
Medium
Solve Time
45–60 sec

Solved UPSC CDS/OTA Question

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Q · Mixtures and CompoundsMedium · 45s

Which of these represents a chemical change?

TopicMixtures and Compounds
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.

Burning creates new substances — irreversible — chemical change.

Final Answer: Option C — Burning of paper
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Mixtures and Compounds Question 20 – UPSC CDS/OTA