Question:
Which of the following substances is NOT required in the construction of \(\text{H}_2 - \text{O}_2\) fuel cell?
Which of the following substances is NOT required in the construction of \(\text{H}_2 - \text{O}_2\) fuel cell?
Show Hint
Fuel cell: H$_2$ + O$_2$ → Electricity + H$_2$O (product).
Updated On: May 4, 2026
- Carbon rod
- \(\text{KOH}\) solution
- Platinum
- Pure water
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Concept:
A hydrogen-oxygen fuel cell converts chemical energy into electrical energy.
Step 1: Components required.
• Porous carbon electrodes (carbon rod) \checkmark
• Catalyst (Platinum) \checkmark
• Electrolyte (KOH solution) \checkmark
Step 2: Role of water.
• Water is a product of the reaction
• Not required as a starting component
Step 3: Conclusion. \[ \text{Pure water is NOT required for construction} \]
A hydrogen-oxygen fuel cell converts chemical energy into electrical energy.
Step 1: Components required.
• Porous carbon electrodes (carbon rod) \checkmark
• Catalyst (Platinum) \checkmark
• Electrolyte (KOH solution) \checkmark
Step 2: Role of water.
• Water is a product of the reaction
• Not required as a starting component
Step 3: Conclusion. \[ \text{Pure water is NOT required for construction} \]
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Electrochemical Cells Questions
- Cell reaction is spontaneous, when
- Which of the following expressions is used to find the cell potential of $Cd_{(s)} | Cd_{(aq)}^{2+} \, || \, Cu_{(aq)}^{2+} | Cu_{(s)}$ cell at $25^\circ \text{C}$?
- Which from following is NOT true about voltaic cell?
- Calculate $E^0_{cell}$ for $Cd(s) | Cd^{++}(1M) | | Ag^{+}(1M) | Ag(s)$. Given $E^0_{Cd} = -0.403 V$; $E^0_{Ag} = 0.799 V$.
- Calculate $\Delta G^{\circ}$ for the cell: $Sn_{(s)}|Sn_{(1M)}^{2+}||Ag_{(1M)}^{+}|Ag_{(s)}$ at $25^{\circ}C (E_{cell}^{\circ}=0.90~V)$
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions