Question

A student is given four sample of solids W, X, Y and Z, all of which have metallic lusture. The results of her investigations are written a tabular form not matched correctly. Select the correct match sequence forW, X, Y and Z.
Property Solid
a) W is a good electrical conductor. X, Y, Z are poor electrical conductors. P) I2
b) When the solids are hit with a hammer W, flattens out, X shatters into
many pieces, Y is smashed into powder and Z is not affected Q) SiO2
c) When the solids are heated with a Bunsen burner, Y melts with some
sublimation, but X, W, Z do not meet R) PbS
d) In treatment with 6M HNO3X dissolves, there is no effect on W or Z S) Au

Answer 1

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