Polymer Technology
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

Fe
V₂O₅
Aluminium triethyl combined with titanium tetrachloride
Ni

ANSWER DOWNLOAD EXAMIANS APP

Polymer Technology
Epoxy resins (i.e., epoxide polymers)

Contain an epoxy group ( ##### ) at the ends of the polymer
Are made by addition polymerisation reaction only
Are cross-linked polymers only
Use emulsion polymerisation methods

ANSWER DOWNLOAD EXAMIANS APP

Polymer Technology
Pick out the wrong statement regarding the solubility characteristics of high polymers.

Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents
Greater the degree of cross-linking in the polymer, lesser is its solubility
Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent
High molecul ar weight polymers on dissolving gives solution of very low viscosity

ANSWER DOWNLOAD EXAMIANS APP