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For aqueous solutions of which of the fo...

For aqueous solutions of which of the following substances could the concentration be determined by visible spectrophotometry?
(P) `Cr(NO_(3))_(3)` (Q) `KMnO_(4)`
(R) `Zn(NO_(3))_(2)`

A

P only

B

R only

C

P and Q only

D

P,Q and R

Text Solution

Verified by Experts

The correct Answer is:
C
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