MCQ on Rheology & Characterisation of Polymers

Multiple Choice Questions on Rheology & Characterisation of Polymers

A dilute solution is one when chain-chain interaction is
(a) 10%
(b) 5%
(c) 1%
(d) 0%

In Maxwell’s model springs and dashpots are arranged in
(a) Parallel
(b) Series
(c) (a) and (b) both
(d) None of these

In polymeric solution the chain lengths are
(a) Not equal
(b) Equal
(c) Semi equal
(d) None of these

The viscosity will be an average and will not be constant
(a) in regular solutions
(b) in polymer solutions
(c) (a) and (b) both
(d) None

If viscosity is independent of the rate of strain, then liquid is said to be
(a) Non-Newtonian fluids
(b) Newtonian fluids
(c) Strained liquid
(d) Non-strained liquid

Two types of deviation from Newtonian flow are commonly observed in polymer solutions
(a) Pseudoplastic and dilatent behaviour
(b) Dilatent and Newtonian behaviour
(c) Pseudoplastic and Non-Newtonian behaviour
(d) None

When spring and dashpot are combined in parallel mode, then the model is known as
(a) Maxwell
(b) Voigt
(c) Visco-elastic
(d) None

The relaxation phenomenon of visco-elastic fluids are explained by model
(a) Maxwell
(b) Newtonian
(c) Non-Newtonian
(d) Voigt

The average chain lengths can be found from
(a) DSC
(b) TGA
(c) GPC
(d) DMA

The galss temperature (Tg) is measured by
(a) DSC
(b) GPC
(c) X-Ray
(d) SEM