Recent questions in Chemistry of High Polymers

Resol is produced by reaction of $\_\_\_\_\_\_$.phenol with an excess of formaldehyde in presence of a base catalystformaldehyde with an excess of phenol in presence of a...

A certain amount of plasticizer with a glass transition temperature $\left(T_{g}\right)$ of $-50^{\circ} \mathrm{C}$ was added to a polymer to reduce its $T_{g}$ from $70...

Match the vitamins in Column I with their respective coenzyme forms listed in Column II.$$\begin{array}{|ll|ll|} \hline & \textbf{Column I} & & \textbf{Column II} \\ \hli...

​​​​The 'unperturbed dimension' of the polymer chain is represented as,$$\left(\overline{r_{o}^{2}}\right)^{1 / 2} \propto \bar{l}(n)^{1 / 2}$$where,$\left(\overline{r_{o...

Which of the following options is/are true for glass transition temperature $\mathrm{T}_{\mathrm{g}}$ ?Above $\mathrm{T}_{\mathrm{g}}$, glass transforms from an amorphous...

Melting phenomenon in a semi-crystalline polymer is a __________ order phase transition.zerothfirstsecondthird

Q. 64An electrochemical cell consists of pure $\mathrm{Zn}$ electrode (anode) and a hydrogen electrode (cathode) in a dilute $\mathrm{Zn}^{+2}$ solution. The overall reac...

\begin{tabular}{l|l}Q.125 & \begin{tabular}{l}Among the options given, which method(s) is/are used for the synthesis of atactic \\polystyrene?\end{tabular} \\\hline& Free...