Which of the following statements are true for fuel cells?

  • A
    They run till the reactants are active
  • B
    They are free from pollution
  • C
    They are more efficient
  • D
    All of the above

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Similar Questions

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:

Assertion : Galvanised iron does not rust.
Reason : Zinc has a more negative electrode potential than iron.

$A$ moving coil galvanometer has $150$ equal divisions. Its current sensitivity is $10 \text{ divisions per milliampere}$ and voltage sensitivity is $2 \text{ divisions per millivolt}$. In order that each division reads $1 \text{ V}$,the resistance in ohms needed to be connected in series with the coil will be

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Given the standard electrode potentials $E^{0}_{Fe^{2+}|Fe} = -0.44 \, V$ and $E^{0}_{Fe^{3+}|Fe^{2+}} = 0.77 \, V$. If $Fe^{2+}$,$Fe^{3+}$,and $Fe$ are all present together,then:

Can you store copper sulphate solutions in a zinc pot?

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