Qualitative Analysis - Result Question 39
Passage
$p$-amino-N, N-dimethylaniline is added to a strongly acidic solution of $X$. The resulting solution is treated with a few drops of aqueous solution of $Y$ to yield blue colouration due to the formation of methylene blue. Treatment of the aqueous solution of $Y$ with the reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, treatment of the solution of $Y$ with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of $Z$.
42. The compound $Y$, is
(a) $MgCl _2$
(b) $FeCl _2$
(c) $FeCl _3$
(d) $ZnCl _2$
(2009, 1M)
Show Answer
Answer:
Correct Answer: 42. (c)
Solution:
$Y$ is $FeCl _3$.
BETA
