Point defects are present in ______.

Which type of defects are present in AgBr and ZnS crystal systems ?

Which type of defects are present in AgBr and ZnS crystal systems?

The diseases caused by defects that are present right from the birth are known as

Which of the following defects is present in KCl crystals ?

Which of the following defects is present in KCl crystals ?

Which of the following defects is present in KCl crystals ?

Assertion (A) : Point defects are the irregularities or deviations from ideal arrangement around a point in a crystalline substance. Reason (R) : Schottky defect is basically a vacancy defect in ionic solids.

Which of the following defects, if present, lowers the density of the crystal ?

Which of the following defects, if present, lowers the density of the crystal ?

Defects are basically irregularities in the arrangement of constituent particles. Broadly speaking the defects are of two types. Namely point defects and line defects. Point defects: The irregularities or deviations from ideal arrangement around a point or an atom in the crystalline substance. Line defects : The irregularities or deviations from ideal arrangement in enitre row of lattice points. Answer the following questions. Select the correct statements : (i) Frenkel defect create a vacancy defect at its original site and an interstitial defect at its new position. (ii) Frenkel defect is stoichiometric point defect. (iii) Frenkel defect is alos called dislocation defect. (iv) Silver halide shows Frenkel defect.