Question

Match metal ion (Part I) with colour (Part II) in presence of alizarin:

	Part I		Part II
I.	${Sn}^{2+}$	A.	Blue
II.	${Mg}^{2+}$	B.	Pink
III.	${Al}^{3+}$	C.	Violet
IV.	${Ba}^{2+}$	D.	Red

• A. I-A II-D III-C IV-B
• B. I-B II-A III-D IV-C
• C. I-C II-B III-A IV-D
• D. I-D II-C III-B IV-A

Answer 1

Answer: (B)

I-B II-A III-D IV-C

$Alizarin$ is a typical mordant dye gives different colours with metal ions as some of them are given below:

$A{l}^{3+}\Rightarrow Red$
$S{n}^{2+}\Rightarrow Pink$

$B{a}^{2+}\Rightarrow Voilet$
$M{g}^{2+}\Rightarrow Blue$
Option B is correct.