MCQ
The relation between $\Delta G$ and $E$ for a cell is $\Delta G = - nFE$; the cell reaction will be spontaneous if
- A$G$ is negative
- B$G$ is positive
- C$E$ is negative
- ✓$E$ is positive
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| List-$I$ | List-$II$ |
| $P$ In process $I$ | $1$ Work done by the gas is zero |
| $Q$ In process $II$ | $2$ Temperature of the gas remains unchanged |
| $R$ In process $III$ | $3$ No heat is exchanged between the gas and its surroundings |
| $S$ In process $IV$ | $4$ Work done by the gas is $6 P _0 V _0$ |

Which of the following graphs correctly depicts the change in $pH?$
[Use mass of electron $\left.=9.1 \times 10^{-31}\, \mathrm{~kg}, \mathrm{~h}=6.63 \times 10^{-34}\, \mathrm{~J} \mathrm{~s}, \pi=3.14\right]$