Which one of the following types of change occurs when both the appearance and composition of a substance change?
مندرجہ ذیل میں سے کون سی تبدیلی کی تبدیلی اور اس وقت ہوتی ہے جب مادہ کی تبدیلی کی ظاہری شکل اور تشکیل دونوں؟
Answer: Chemical change
Explanation
A chemical change alters both the appearance and the composition of a substance.
Examples include rusting of iron or burning of wood, where new substances are formed.
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