When chlorine water is added to an aqueous solution of potassium halide in the presence of chloroform,a violet colour is obtained. On adding more chlorine water,the violet colour disappears,and a colourless solution is obtained. This test confirms the presence of which of the following in the aqueous solution?
- AIodide
- BBromide
- CChloride
- DIodide and bromide
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On treating a compound with warm dil. $H_{2}SO_{4}$,gas $X$ is evolved which turns $K_{2}Cr_{2}O_{7}$ paper acidified with dil. $H_{2}SO_{4}$ to a green compound $Y$. $X$ and $Y$ respectively are
$M \text{ (Salt)} + \text{Dil. } HCl \xrightarrow{\text{Warm}} N \uparrow + P \downarrow$. Gas $N$ changes the colour of $FeSO_4$ solution into a yellow solution. Then,salt $M$ in the above reaction is:
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View Solution$A$ white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the solution,a white precipitate is formed which does not dissolve in dilute nitric acid. The anion could be
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View SolutionChoose the correct matching $:-$
Column-$I$ Column-$II$ $P$. $NaBr + \text{Conc. } H_2SO_4 \rightarrow$ $A$. Colourless gas $Q$. $Na_2S + \text{dil. } HCl \rightarrow$ $B$. Brown colour $R$. $NaNO_2 + \text{dil. } HCl \rightarrow$ $C$. Rotten egg smell $S$. $NaNO_3 + \text{Conc. } H_2SO_4 \rightarrow$ $D$. Paramagnetic
| Column-$I$ | Column-$II$ |
|---|---|
| $P$. $NaBr + \text{Conc. } H_2SO_4 \rightarrow$ | $A$. Colourless gas |
| $Q$. $Na_2S + \text{dil. } HCl \rightarrow$ | $B$. Brown colour |
| $R$. $NaNO_2 + \text{dil. } HCl \rightarrow$ | $C$. Rotten egg smell |
| $S$. $NaNO_3 + \text{Conc. } H_2SO_4 \rightarrow$ | $D$. Paramagnetic |
Difficult
View SolutionThe brown ring test is used to detect the presence of which of the following ions?
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