On addition of conc. $H_2SO_4$ to a chloride salt,colourless fumes are evolved,but in the case of an iodide salt,violet fumes are observed. This is because:
- A$H_2SO_4$ reduces $HI$ to $I_2$
- B$HI$ is of violet colour
- C$HI$ gets oxidised to $I_2$
- D$HI$ changes to $HIO_3$
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The phosphate radical reacts with ammonium molybdate to form a precipitate of which color?
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Choose the correct matching:-
Column-$I$
Column-$II$
$(P) NaBr + \text{conc. } H_2SO_4 \rightarrow$
$(A) \text{Colourless gas}$
$(Q) Na_2S + \text{dil. } HCl \rightarrow$
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$(R) NaNO_2 + \text{dil. } HCl \rightarrow$
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$(D) \text{Paramagnetic}$
| Column-$I$ | Column-$II$ |
|---|---|
| $(P) NaBr + \text{conc. } H_2SO_4 \rightarrow$ | $(A) \text{Colourless gas}$ |
| $(Q) Na_2S + \text{dil. } HCl \rightarrow$ | $(B) \text{Brown colour}$ |
| $(R) NaNO_2 + \text{dil. } HCl \rightarrow$ | $(C) \text{Rotten smell}$ |
| $(S) NaNO_3 + \text{conc. } H_2SO_4 \rightarrow$ | $(D) \text{Paramagnetic}$ |
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