Which of the following statements is $NOT$ correct for $H_2-O_2$ fuel cell?

  • A
    $H_{2(g)}$ serves as fuel
  • B
    $O_{2(g)}$ is an oxidising agent
  • C
    Platinum wires are used as anode and cathode
  • D
    Hot aqueous $KOH$ solution acts as an electrolyte

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Similar Questions

When the lead storage battery is in use (during discharge),the reaction that occurs at the anode is:

Match List-$I$ with List-$II$.
$LIST$-$I$ (Cell) $LIST$-$II$ (Use/Property/Reaction)
$A$. Leclanche cell $I$. Converts energy of combustion into electrical energy
$B$. Ni-Cd cell $II$. Does not involve any ion in solution and is used in hearing aids
$C$. Fuel cell $III$. Rechargeable
$D$. Mercury cell $IV$. Reaction at anode $Zn \rightarrow Zn^{2+} + 2e^-$

Choose the correct answer from the options given below:

Which of the following statements are correct regarding a fuel cell that uses hydrogen and oxygen as fuels?
$A$. It has been used in spaceships.
$B$. It has an efficiency of about $40 \%$ to $60 \%$ to produce electricity.
$C$. It uses aluminium as a catalyst.
$D$. It is eco-friendly.
$E$. It is actually a type of galvanic cell.

If $\lambda_{m}^{o}(SO_{4}^{2-}) = 160 \ S \ cm^{2} \ mol^{-1}$ and $\Lambda_{m}^{o}(Al_{2}(SO_{4})_{3}) = 758 \ S \ cm^{2} \ mol^{-1}$,then calculate $\lambda_{m}^{o}(Al^{3+})$.

Assertion : If $\lambda^o_{Na^{+}}$ and $\lambda^o_{Cl^{-}}$ are molar limiting conductivity of sodium and chloride ions respectively,then the limiting molar conductivity for sodium chloride is given by the equation :
$\Lambda^o_{NaCl} = \lambda^o_{Na^{+}} + \lambda^o_{Cl^{-}}$
Reason : This is according to Kohlrausch law of independent migration of ions.

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