The limiting molar conductivities $\left(\Lambda_0\right)$ for NaCl , KBr and KCl are 126,152 and $150 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ respectively. What is the $\Lambda_0$ of NaBr ?

If $\mathrm{Cell-OH}$ represents formula of cellulose, identify the formula of cellulose xanthate from following.

Which from following ligands has highest field strength?

Which from following compounds is NOT a mono carboxylic acid?