Which substance is reduced in a dry cell?

In the Daniell cell,$Zn|Zn^{2+} || Cu^{2+}|Cu$,when an external voltage is applied such that $E_{\text{external}} > E_{\text{cell}}$,current flows from.........

The energy conversion involved in a galvanic cell is

$A$ galvanic cell has an electrical potential of $1.1 \ V$. If an opposing potential of $1.1 \ V$ is applied to this cell,what will happen to the cell reaction and the current flowing through the cell?

Which of the following statements is correct?

In a hydrogen-oxygen fuel cell,the combustion of hydrogen occurs to: