1.

(A) The presence of a large number of Schottky defects in NaCZ lowers its density. (R) In NaCZ, there are approximately 10^(6) Schottky pairs per 1 cm3 at room temperature.

Answer»

Both (A) and (R) are TRUE and (R) is the correct EXPLANATION of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Answer :B


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