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Fe, Al and Cr are grouped together in qu...

Fe, Al and Cr are grouped together in qualitative analysis, because

A

these have three electrons in valency shell.

B

their hydroxides are insoluble

C

their valency is three

D

their sulphides are soluble in water

Text Solution

Verified by Experts

The correct Answer is:
B
`M(OH)_(3)` are insoluble
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