1
KCET 2025
MCQ (Single Correct Answer)
+1
-0

The group reagent $\mathrm{NH}_4 \mathrm{Cl}(\mathrm{s})$ and aqueous $\mathrm{NH}_3$ will precipitate which of the following ion?

A
$\mathrm{NH}_4^{+}$
B
$\mathrm{Al}^{3+}$
C
$\mathrm{Ba}^{2+}$
D
$\mathrm{Ca}^{2+}$
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0

The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it

A
helps in precipitation of AgCl
B
increases the solubility of AgCl
C
increases the concentration of $\mathrm{NO}_3^{-}$ion
D
decomposes $\mathrm{Na}_2 \mathrm{~S}$ and NaCN , if formed
3
KCET 2024
MCQ (Single Correct Answer)
+1
-0

In the analysis of III group basic radicals of salts, the purpose of adding $\mathrm{NH}_4 \mathrm{Cl}(s)$ to $\mathrm{NH}_4 \mathrm{OH}$ is

A
to increase the concentration of $\mathrm{OH}^{-}$ions
B
to precipitate the radicals of group IV and V
C
to suppress the dissociation of $\mathrm{NH}_4 \mathrm{OH}$
D
to introduce $\mathrm{Cl}^{-}$ions
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