Polymer Technology - Chemical Engineering Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Polyvinyl acetate is never used for making

moulded articles

fibres

adhesives

all (a), (b) & (c)

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is

7 kgf/cm² and 70 °C.

1000 kgf/cm² and 100°C.

7 kgf/cm² and 700°C.

1 kgf/cm² (gage) and 70°C.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Vulcanisation of rubber does not increase its

elasticity

plasticity

ductility

none of these

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

In nylon-6, the number 6 represents the total number of

carbon atoms in the ring.

carbon atoms in the linear polymer chain.

nitrogen atoms in the ring.

hydrogen atoms in the ring.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Cellulose content in bomboo fibre is about __________ percent.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

cross linked polystyrene.

phenol formaldehyde resins.

polyesters.

polyamides.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of the following has the weakest intermolecular forces ?

Polyisoprene

Nylon-66

Polystyrene

Bakelite

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Properties of a polymer is affected by the

chain length.

intermolecular forces.

branching & cross-linking.

all (a), (b).

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

In condensation polymerisation as compared to addition polymerisation

the monomers are unsaturated compounds.

no co-product is lost.

the monomers contain two functional groups.

generally only one monomer is involved