Phenol Is heated with excess of formaldehyde in presence of NaOH to form across linked polymer. Give two usesof thepolymer formed.

Phenol Is heated with excess of formaldehyde in presence of NaOH to form a cross linked polymer. Name the polymer.

The reaction between benzaldehyde and formaldehyde in the presence of conc. NaOH gives

When bromoethane is reacted with sodium in the presence of ether an alkane is formed.Give the chemical equation for the above reaction.

What Is the cross linked polymer obtained by the polymerisation of phenol and formaldehyde?

A mixture of benzaldehyde and formaldehyde is heated with 50% NaOH forms ?

When phenol is heated strongly with zinc dust the product formed is

The product formed by the reaction of acetamide with bromine in the presence of NaOH is

Aniline is treated with bromine water and the resulting product is treated with an aqueous soluition of sodium nitrite in presence of dilute HCl. The compound so formed is converted into tetrafluoroborate which is subsequently heated dry. The final product is

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives