When crystals of lead nitrate are heated strongly in a dry test tube
a. crystals immediately melt b. a green residue is left
c. white fumes appear in the tube d. a yellow residue is left
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Lead nitrate, when heated strongly in a dry test tube, it produces Lead oxide(\(PbO\)), Nitrogen dioxide( \(NO_{2}\)) and oxygen(\(O_{2}\)). The lead nitrate is found to turn yellow due to the resultant product- lead oxide (\(PbO\)) and also there is the evolution of a reddish-brown gas which is nitrogen dioxide.
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