When $SO_2$ is bubbled into an acidic $KMnO_4$ solution,decolorization of the purple solution takes place along with the formation of a manganese compound $X$. Under neutral conditions,compound $X$ reacts with $KMnO_4$ in the presence of zinc oxide to give another manganese compound $Y$. The oxidation states of manganese in compounds $X$ and $Y$,respectively,are
- A$+7$ and $+2$
- B$+2$ and $+4$
- C$+4$ and $+7$
- D$+2$ and $+2$
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Which gases are formed by the oxidation of carbon with concentrated $H_2SO_4$?
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View SolutionMatch the chemical reactions given in List-$I$ with their types given in List-$II$:
List-$I$ List-$II$ $A$. $TiCl_{4(l)} + 2Mg_{(s)} \xrightarrow{\Delta} Ti_{(s)} + 2MgCl_{2(s)}$ $I$. Disproportionation reaction $B$. $2H_2O_{2(aq)} \rightarrow 2H_2O_{(l)} + O_{2(g)}$ $II$. Metal displacement reaction $C$. $C_{(s)} + O_{2(g)} \xrightarrow{\Delta} CO_{2(g)}$ $III$. Decomposition reaction $D$. $2NaH_{(s)} \xrightarrow{\Delta} 2Na_{(s)} + H_{2(g)}$ $IV$. Combination reaction
| List-$I$ | List-$II$ |
| $A$. $TiCl_{4(l)} + 2Mg_{(s)} \xrightarrow{\Delta} Ti_{(s)} + 2MgCl_{2(s)}$ | $I$. Disproportionation reaction |
| $B$. $2H_2O_{2(aq)} \rightarrow 2H_2O_{(l)} + O_{2(g)}$ | $II$. Metal displacement reaction |
| $C$. $C_{(s)} + O_{2(g)} \xrightarrow{\Delta} CO_{2(g)}$ | $III$. Decomposition reaction |
| $D$. $2NaH_{(s)} \xrightarrow{\Delta} 2Na_{(s)} + H_{2(g)}$ | $IV$. Combination reaction |
Consider the following list of reagents:
Acidified $K_2Cr_2O_7$,alkaline $KMnO_4$,$CuSO_4$,$H_2O_2$,$Cl_2$,$O_3$,$FeCl_3$,$HNO_3$ and $Na_2S_2O_3$. The total number of reagents that can oxidise aqueous iodide to iodine is
Acidified $K_2Cr_2O_7$,alkaline $KMnO_4$,$CuSO_4$,$H_2O_2$,$Cl_2$,$O_3$,$FeCl_3$,$HNO_3$ and $Na_2S_2O_3$. The total number of reagents that can oxidise aqueous iodide to iodine is
MediumIIT 2014
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