MCQ
The colour discharge tubes for advertisement mainly contain
- AArgon
- ✓Neon
- CHelium
- DXenon
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$A.$ The electrical work that a reaction can perform at constant pressure and temperature is equal to the reaction Gibbs energy.
$B.$ $E _{\text {cell }}^0$ is dependent on the pressure
$C.$ $\frac{ dE ^0 \text { cell }}{ dT }=\frac{\Delta_{ r } S ^0}{ nF }$
$D.$ A cell is operating reversibly if the cell potential is exactly balanced by an opposing source of potential difference.
Consider the above reaction, the product $'X'$ and $'Y'$ respectively are :


$CH_3CH_2CH_2Br + NaCN \to $$CH_3CH_2CH_2CN+ NaBr$
This reaction will be the fastest in
