MCQ
Which of the following is not linked with methane
- AMarsh gas
- BNatural gas
- ✓Producer gas
- DCoal gas
$ \underset {Coke \,Red \,hot} {2C} \, + \underbrace {O_2 \, + 4N_2}_\text {Air} \, \longrightarrow \, \underbrace {2CO \, + \,4N_2}_\text {Producer $\,$gas} $
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$(P)\, Fe(CO)_5\,\,\, (Q)\,CO\,\,\, (R)\, H_3B \leftarrow CO\,\,\,(S)\, [Mn(CO)_5]^-$
$\text { A } \quad\quad\quad\quad\quad \text { B } \quad\quad\quad\text { C } \quad\quad\quad\quad\text { D }$
$1 \times 10^{-4} \quad 2 \times 10^{-4} \quad 0.1 \times 10^{-4} \quad 0.2 \times 10^{-4}$
(Where $E$ is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?
