गलन physical change क्यों है?
Why is melting a physical change?
Explanation opens after your attempt
B. chemical composition नहीं बदलतीChemical composition does not change
Concept
In melting solid becomes liquid but identity of substance remains same. Therefore it is physical change.
Why this answer is correct
The correct answer is B. chemical composition नहीं बदलती / Chemical composition does not change. In melting solid becomes liquid but identity of substance remains same. Therefore it is physical change.
Exam Tip
Melting में solid liquid बनता है पर substance की identity same रहती है। इसलिए यह physical change है।
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