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Quartz is a crystalline variety of

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Important Questions on Solid State

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The unit cell of a binary alloy of A and B metals has a ccp structure with A atoms occupying the corners and B atoms occupying the centres of each face of the cubic unit cell. If, during the crystallisation of this alloy in the unit cell, two A atoms are missed, the overall composition per unit cell is 
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Among the following, which crystal will be soft and has low melting point?
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A certain metal crystallises in a simple cubic structure. At a certain temperature, it arranges to give a body-centred structure. In this transition, the density of the metal
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Whìch of the following is NOT a property of solids?

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A crystalline solid
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Which among the following solids is a non-polar solid?

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Which of the following is TRUE for diamond?
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How many space lattices are known from the different crystal systems?