Select the correct statement for thermoplastic polymer.
It does not become soft on heating under pressure
It cannot be remoulded
It is either linear or branched chain polymer
It is a cross- linked polymer.
C.
It is either linear or branched chain polymer
Thermoplastic polymers are the linear or slightly branched polymers in which the intermolecular forces of attraction are intermediate between elastomers and fibres. These polymers soften on heating and become rigid on cooling. The process of softening, moulding and cooling can be repeated as often as desired. It is not a cross-linked polymer.
The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is
triethylamine
trimethylamine
aniline
methylphenylamine
lsopropyl methyl ether when treated with cold hydrogen iodide gives
isopropyl iodide and methyl iodide
isopropyl alcohol and methyl iodide
isopropyl alcohol and methyl alcohol
isopropyl iodide and methyl alcohol
Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms the presence of
six carbon atoms linked in straight chain
secondary alcoholic group in glucose
aldehyde group in glucose
primary alcoholic group in glucose
Select the compound which on treatment with nitrous acid liberates nitrogen.
Nitroethane
Triethylamine
Diethylamine
Ethylamine