What is the total mass of products obtained when one gram mole of sucrose is hydrolysed?

Which from following polymers is NOT obtained by addition polymerisation method?

Which medicinal property is exhibited by methylsalicylate?

The value of $\left(\dfrac{-1+i\sqrt{3}}{2}\right)^{18} + \left(\dfrac{-1-i\sqrt{3}}{2}\right)^{18}$ is