The enthalpy of vaporisation of a liquid is $30 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and entropy of vaporisation is $75 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$. Calculate boiling point of liquid at 1 atm .

Which from following polymers is used as substitute for wool?

Which from following complexes is having ambidentate ligand in it?

What is the number of moles of oxygen and number of moles of N atoms respectively present in one mole thymine?