NDA 2025
- Exam
- NDA
- Year
- 2025
- Subject
- General Ability
- Chapter
- General Science
NDA 2025 · General Ability · General Science
Which one of the following is NOT a chemical change?
Which one of the following is NOT a chemical change?
Options
- ABurning of coal
- BRusting of metal
- CMelting of ice
- DReaction of acid with base
Correct answer
C. Melting of ice
Step-by-step solution
A chemical change involves the formation of one or more new substances with different chemical properties.
Burning of coal is a combustion reaction, which is a chemical change.
Rusting of metal is an oxidation reaction, which is a chemical change.
Reaction of an acid with a base is a neutralization reaction, which is a chemical change.
Melting of ice is a change of state from solid to liquid. The chemical composition of water remains the same (H_2O
Burning of coal is a combustion reaction, which is a chemical change.
Rusting of metal is an oxidation reaction, which is a chemical change.
Reaction of an acid with a base is a neutralization reaction, which is a chemical change.
Melting of ice is a change of state from solid to liquid. The chemical composition of water remains the same (H_2O