Terylene is the polyester of
hexamethylene diamine and adipic acid
vinyl chloride and formaldehyde
melamine and formaldehyde
ethylene glycol and terephthalic acid
D.
ethylene glycol and terephthalic acid
Terylene (Dacron) is a polyester fibres which is prepared by condensation polymerisation of ethylene glycol and terephthalic acid with elimination of water.This reaction takes place about 425-475 K.
Reaction of acids with alcohols is also known as
esterification
saponification
alkalisation
None of these
Sucrose on hydrolysis gives
glucose and maltose
glucose and lactose
glucose and fructose
only glucose
Glucose gives silver mirror with ammoniacal silver nitrate because it has
aldehyde group
ester group
ketone group
alcoholic silver nitrate
A mixture of ethyl amine and alcoholic KOH on heating gives
alkyl cyanide
ethyl cyanate
ethyl isocyanide
ethyl isocyanate