Question

Identify $A$, $B$, $C$ and $D$ in the following flow chart :

	$A$	$B$	$C$	$D$
(a)	Impurity defects	Stoichiometric defects	Non-stoichiometric defects	Anion excess defects
(b)	Stoichiometric defects	Non-stoichiometric defects	Impurity defects	Metal excess defects
(c)	Non-stoichiometric defects	Stoichiometric defects	Impurity defects	Cation vacancy
(d)	Impurity defects	Stoichiometric defects	Metal excess defects	Non-stoichiometric defects

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (B)

Correct answer is (b) b