Related Questions

Epoxy resins (i.e., epoxide polymers)
A Are made by addition polymerisation reaction only
B Contain an epoxy group ( ##### ) at the ends of the polymer
C Are cross-linked polymers only
D Use emulsion polymerisation methods
Ion exchange resins are made of
A Lucite
B Sulphonated bakelite
C Polystyrene
D Teflon
Thermosetting resins/polymers as compared to thermoplastic ones are
A Soluble in all organic solvents
B More brittle
C Formed by addition polymerisation only
D Easily reshaped & reused
Silicone resins, which are highly water repellant and has good heat resistance can not be used
A As room temperature adhesive
B As grease & lubricant
C Hydraulic fluid for heat transfer
D Resin for lamination
Thermosetting resins are those polymers, which
A Do not increase in plasticity with rise in temperature
B Allow slip to occur between molecules
C Do not take on a permanent set
D None of these
Thermoplastic resins are those polymers, which
A Has decreased plasticity at increasing temperature
B Can not be moulded
C Easily deform under pressure at high temperature
D None of these
Cation exchange resins used in water treatment is made from __________ resin.
A Urea formaldehyde
B Epoxy
C Amino
D Phenolic
__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.
A Epoxy
B Amino
C Alkyd
D Phenolic
Amino resins are used in paper treatment to improve its
A Wet tear and bursting strength
B Folding endurance
C Wet rub resistance
D All of the above
Thermoplastic resins usually
A Remain hard as long as they are hot
B Can not be reclaimed from waste
C Permanent setting resins
D Less brittle than thermosetting resins

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