Which of the following statements are not true?

(a) Vacancy defect results in a decrease in the density of the substance

(b) Interstitial defects result in an increase in the density of the substance

(c) Impurity defect has no effect on the density of the substance

(d) Frenkel defect results in an increase in the density of the substance

Open in App

Solution

Answers: (c) Impurity defect has no effect on the density of the substance, and (d) Frenkel defect results in an increase in the density of the substance

Reason:

Statements (c) and (d) can be correctly written as (c) Impurity defect changes the density of substance as impurity has a different density than the ion present on the perfect crystal. e.g., when $S r C l_{2}$ is added to the NaCI crystal it causes impurity defect.

(d) Frenkel defect results neither decrease nor increase in density of the substance.

Suggest Corrections

Similar questions

Which of the following defects decrase the density ?

(a) Interstitial defect (b) Vacancy defect

Q. Match the defects given in column I with statements given in column II and mark the appropriate choice.

	Column I		Column II
(A)	Simple vacancy defect	(i)	Shown by non-ionic solids and increases the density of the solid.
(B)	Simple interstitial defect	(ii)	Shown by ionic solution and decreases the density of the solid
(C)	Frenkel defect	(iii)	Shown by non-ionic solids and decreases the density of the solid
(D)	Schottky defect	(iv)	Shown by ionic solids and density of the solid remains the same

Q. Which of the following statements is/are true ?
i) Density of solid gets increased due to interstitial defects
ii) Frenkel defects do not alter the density of the solid
iii) Non-stoichiometric defects modify the formula of the compound

iv) Non-stoichiometric defects do not alter the density of the solid

Which of the following defects results in the decrease of density of crystal

Match the defects given in Column I with the statements in given Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . & s i m p l e v a c a n c y d e f e c t & 1. S h o w n b y n o n - i o n i c s o l i d s a n d i n c r e a s e s d e n s i t y o f t h e s o l i d B . & S i m p l e i n t e r s t i t i a l d e f e c t & 2. S h o w n b y i o n i c s o l i d s a n d d e c r e a s e s d e n s i t y o f t h e s o l i d c . & F r e n k e l d e f e c t & 3. S h o w n b y n o n - i o n i c s o l i d s a n d d e n s i t y o f t h e s o l i d d e c r e a s e s D . & S c h o t t k y d e f e c t & 4. S h o w n b y i o n i c s o l i d s a n d d e n s i t y o f t h e s o l i d r e m a i n s t h e s a m e \end{matrix}$

Join BYJU'S Learning Program