NEET 2021 Question Paper Mock Test

For irreversible expansion of an ideal gas under isothermal condition, the correct option is:

The molar conductivity of $0.007\text{M}$ acetic acid is $20{\text{S cm}}^2{\text{mol}}^{-1}$. What is the dissociation constant of acetic acid? [Given ${\Lambda }_m^{\circ }({\text{H}}^{+})=350{\text{S cm}}^2{\text{mol}}^{-1}$ and ${\Lambda }_m^{\circ }({\text{CH}}_3{\text{COO}}^{-})=50{\text{S cm}}^2{\text{mol}}^{-1}$ ]

The slope of Arrhenius Plot ($\ln k$ vs $1/T$) of first order reaction is $-5\times 10^3\text{K}$. The value of $E_a$ of the reaction is: [Given $R=8.314{\text{J K}}^{-1}{\text{mol}}^{-1}$ ]

$${\text{CH}}_3{\text{CH}}_2{\text{COO}}^{-}{\text{Na}}^{+}+\text{NaOH}\stackrel{\text{Heat},?}{\to }{\text{CH}}_3{\text{CH}}_3+{\text{Na}}_2{\text{CO}}_3$$
Identify the missing reagent:

In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?