General Science - Physics (Basics)
Which of the following is NOT a physical change?
Which of the following is NOT a physical change?
medium Q6 of 15
Step-by-Step Solution
Step 1: Differentiate physical and chemical changes
Physical changes do not form new substances; chemical changes do.Step 2: Analyze options
Burning of candle produces new substances (carbon dioxide, water vapor), so it is chemical. Sublimation, boiling, and freezing are physical changes.Final Answer:
Burning of candle → Option BQuick Check:
Not a physical change = Burning of candle ✅
Quick Trick: Burning always causes chemical change.
Common Mistakes:
- Confusing sublimation or boiling as chemical changes.
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