Q27 Sand and naphthalene balls were heated together in a china dish. W – InterviewSolution

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1.

Q27 Sand and naphthalene balls were heated together in a china dish. Which substance willbe2left in china dish after heating? Why?

Answer»

When mixture of sand and naphthalene is heated, naphthalene undergoes sublimation and hence is converted to gas and collected by a cotton ball.

Thus the residue left is sand only.

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