आर यूज टू टेस्ट एसिड एंड बेस नेट रियल ऑफ सॉलिड
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Explanation:
When a candle burns, both physical and chemical changes occur. Physical Changes: On heating, candle wax gets melted. Since it again turns into solid wax on cooling. So, the melting of wax and vapourisation of melted wax are physical changes.
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