MCQ
Incorrect match is
ppt $\rightarrow$ colour
- A$Fe(OH)_3$ $\rightarrow$ Red brown
- B$Cu_2[Fe(CN)_6]$ $\rightarrow$ Chocolate brown
- ✓$BaSO_4$ $\rightarrow$ Green
- D$ZnS$ $\rightarrow$ Greenish white
ppt $\rightarrow$ colour
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$\mathrm{A} \stackrel{700 \mathrm{K}}{\rightarrow}$ Product
$\mathrm{A}\xrightarrow[\text { catalyst }]{500 \mathrm{K}} $ Product
it was found that $\mathrm{E}_{\mathrm{a}}$ is decreased by $30 \;\mathrm{kJ} / \mathrm{mol}$ in the presence of catalyst.
If the rate remains unchanged, the activation energy for catalysed reaction is (Assume pre exponential factor is same $):$

To obtain high yields of $CH_3Cl$, the ratio of $CH_4$ to $Cl_2$ must be
Reason : Benzene is a solvent for the Friedel- Craft's alkylation of bromobenzene.