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NTPC Graduate Tier 1 2025 Shift-1 📅 06 May, 2025

Which of the following is an example of a chemical change?

A
Burning wood
B
Cutting paper
C
Boiling water
D
Melting ice
Result Summary
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APEDIA

NTPC Graduate Tier 1
2025 • 06 May, 2025 • Shift-1
Which of the following is an example of a chemical change?
Correct Answer
Burning wood
Defining Changes: Physical changes alter the form or appearance of a substance but not its fundamental identity, whereas chemical changes result in the creation......
Ref/Book : NTPC Graduate Tier 1 2025
Ref. Subject General Science
Chapter -
Ref. Topic Chemistry
Pg. No -
💡 Analysis & Explanation
Defining Changes ▼
Physical changes alter the form or appearance of a substance but not its fundamental identity, whereas chemical changes result in the creation of completely new substances.
Analyzing Options ▼
Cutting paper, boiling water into steam, and melting ice into water all leave the original molecules intact.
Combustion Reaction ▼
Burning wood involves a reaction with oxygen, producing ash, carbon dioxide, and water vapor, fundamentally altering the molecular structure.
Conclusion ▼
Therefore, burning wood is the classic example of a chemical change.
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