The role of an electrolyte in the  preparation of H2 by electrolytic method is:

1. It lowers the availability of ions available in the process for the conduction of electricity.
2. It makes the ions available in the process for conduction of electricity.
3. It cools down the temperature.
4. None of the above

Subtopic:  Preparation & Properties |
 81%
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The products obtained on the completion of the following reactions (i) and (ii) respectively are :

i. C3H8(g) + 3H2O(g) \(\xrightarrow[Catalyst]{\Delta}\) A
ii. \(\mathrm{Zn}_{(s)}+\mathrm{NaOH}_{(\mathrm{aq})} \xrightarrow[]{Heat}\)B


1. A = CO, and H2 ; B = Na2ZnO2
2. A  = CO2 ; B = Na4ZnO4
3. A = CH3CH2CH2OH ; B=  ZnO
4. None of the above


 

 

Subtopic:  Preparation & Properties |
 78%
From NCERT
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The following reaction is an example of :

\(2 \mathrm{MnO}_4^{-}+6 \mathrm{H}^{+}+5 \mathrm{H}_2 \mathrm{O}_2 \rightarrow 2 \mathrm{Mn}^{2+}+8 \mathrm{H}_2 \mathrm{O}+5 \mathrm{O}_2\)

1. Hydrolysis reaction

2. Redox reaction

3. Disproportionation reaction

4. None of the above

Subtopic:  Preparation & Properties | H2O2 (Hydrogen Peroxide) |
 68%
From NCERT
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