Related Questions

Cation exchange resins used in water treatment is made from __________ resin.
A Urea formaldehyde
B Epoxy
C Amino
D Phenolic
Price of paper has increased by 20%. Approximately, what percent of the paper usage must be curtailed so that the expenditure for paper remains the same?
A 8.66%
B 12.33%
C 16.66%
D 17.33%
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
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
Resins are
A Not soluble in water
B Soluble in spirit
C Used in varnishes
D Left behind on evaporation of oil
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
__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.
A Epoxy
B Amino
C Alkyd
D Phenolic

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