to identify the type of reaction by studying the reaction and recording the observations
1.combustion of magnesium in air
2.action of dil.sulphuric acid on zinc
3.To heat lead nitrate
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1. combustion/combination reaction.
magnesium burns in air with a dazzling white flame and a white powdery substance is formed.
2. displacement reaction.
zinc chloride is formed with evolution of a colourless and odourless hydrogen gas.
3. thermal decomposition reaction.
lead oxide yellow solid is formed along with evolution of brown fumes of nitrogen dioxide and oxygen gas.
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