Among ethanol, dimethyl ether, methanol and propanal, the isomers…

In the above first order reaction the initial concentration of $\mathrm{N}_{2} \mathrm{O}_{5}$ is $2.40 \times 10^{-2}\, \mathrm{~mol} \,\mathrm{~L}^{-1}$ at $318 \,K.$ The concentration of $\mathrm{N}_{2} \mathrm{O}_{5}$ after $1\, hour$ was $1.60 \times 10^{-2}\, \mathrm{~mol} \,\mathrm{~L}^{-1}$, The rate constant of the reaction at $318\, \mathrm{~K}$ is $.....\,\times 10^{-3} \mathrm{~min}^{-1}$. (Nearest integer)

[Given: $\log 3=0.477, \log 5=0.699$ ]

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Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

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Catalyst $A$ reduces the activation energy for a reaction by $10\, k\,J\, mol ^{-1}$ at $300\, K$. The ratio of rate $\frac{ k _{ T }, \text { Catalysed }}{ k _{ T }, \text { Uncatalysed }}$ is $e ^{ x }$ [nearest integer $]$

[Assume theat the pre-exponential factor is same in both the cases.

Given $R =8.31 \,J\, K ^{-1} \,mol ^{-1}$ ]

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In Friedel craft alkylation of benzene with methyl chloride, the catalyst used is:

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Nitrogen is liberated by the thermal decomposition of only

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