Which of the following polymers does not soften on heating and harden on cooling-PolythenePolyvinylsPolystyreneUrea-formaldehyde resins

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Standard XII

Chemistry

Thermoplastic

Which of the ...

Question

Which of the following polymers does not soften on heating and harden on cooling?

Polythene

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Polyvinyls

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Polystyrene

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Urea-formaldehyde resins

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Solution

The correct option is D Urea-formaldehyde resins
Polythene, Polyvinyls and Polystyrene are Thermoplastic polymers.

Urea-formaldehyde resin is a thermosetting polymer.

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Similar questions

Q. Which of the following polymers does not soften on heating?

Which of the following are characteristics of thermosetting polymers?

(a) Heavily branched cross linked polymers

(b) Linear slightly branched long chain molecules

(d) Soften on heating and harden on cooling, can be reused

Which of the following polymers are condensation polymers?

(a) Bakelite

(b) Teflon

(d) Melamine formaldehyde resin

Which of the following are addition polymers?

(a) Nylon

(b) Melamine formaldehyde resin

(d) Polystyrene

Match materials given in Column I with the polymers given in Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . N a t u r a l r u b b e r l a t e x & 1. N y l o n B . W o o d l a m i n a t e s & 2. N e o p r e n e C . R o p e s a n d f i b r e s & 3. D a c r o n D . P o l y e s t e r f a b r i c & 4. M e l a m i n e f o r m a l d e h y d e r e s i n s E . S y n t h e t i c r u b b e r & 5. U r e a - f r o m a l d e h y d e r e s i n s F . U n b r e a k a b l e c r o c k e r y & 6. c i s - p o l y i s o p r e n e \end{matrix}$

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Which of the following polymers does not soften on heating and harden on cooling?

The correct option is D Urea-formaldehyde resinsPolythene, Polyvinyls and Polystyrene are Thermoplastic polymers. Urea-formaldehyde resin is a thermosetting polymer.

The correct option is D Urea-formaldehyde resins
Polythene, Polyvinyls and Polystyrene are Thermoplastic polymers.

Urea-formaldehyde resin is a thermosetting polymer.