1.Amateria does not catch fire but starts to melt on being exposed to flame is it combustible combustible justify your answer. 3.How can we find out if a substance is non-combustible? Explain with an example 2. A balloon filled with airbursts as soon as it is held over a candle flame. But a balloon filled wit does not burst when held over a candle flame. Explain.
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A piece of paper, fabric, wood, kerosene, petrol, fuel gas are some of the combustible substances. The substances which do not catch fire on bringing a flame near them or on placing them on fire are non-combustible substances. Water and sand are the most common non-combustible substances.
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