Assertion: Schottky defect doesn’t have any effect on density of crystal.

Reason: Equal no. of cations and anions missing from the Lattice Points.

1 is correct, 2 is correct and 2 is correct explanation of 1

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1 is correct, 2 is correct and 2 is not correct explanation of 1

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1 is correct, 2 is wrong

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1 is wrong, 2 is correct

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Solution

The correct option is D
1 is wrong, 2 is correct

In schottky defect both cations and anions miss from their lattice points. As the number of constituent particles decreases, the density decreases. So statement 1 is wrong. And as both cations and anions miss in same number statement 2 is correct.

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Similar questions

Read the above assertion and reason and choose the correct statement regarding it.

Schottky defect is observed in crystals when .....................

(a) some cations move from their lattice site to interstitial sites

(b) equal number of cation and anions are missing from the lattice

(d) some impurity is present in the lattice

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