261.

The formation of which of the following polymers involves hydrolysis reaction?

• Nylon 6

• Bakelite

• Nylon 6, 6

• Nylon 6, 6

Buna-N synthetic rubber is a copolymer of

•  and
  H₂C = CH – CH = CH₂

• H₂C = CH – CH = CH₂ and
  H₅C₆ – CH = CH₂

• H₂C = CH – CN and H₂C = CH – CH = CH₂

• H₂C = CH – CN and H₂C = CH – CH = CH₂

Bakelite is obtained from phenol by reacting with

• (CH₂OH)₂

• CH₃CHO

• CH₃COCH₃

• CH₃COCH₃

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is

• R₄Si

• RSiCl₃

• R₂SiCl₂ 

• R₂SiCl₂ 

Which of the following is a polyamide?

• Teflon

• Nylon – 6,6

• Terylene

• Terylene

Which of the following is fully fluorinated polymer?

• Neoprene

• Teflon

• Thiokol

• Thiokol

Super glue or crazy glue is

• poly (methyl methacrylate)

• poly (ethyl acrylate)

• poly (methyl -cyanoacrylate)

• poly (ethyl methacrylate)

Which of the following has an ester linkage?

• Nylon-66

• Dacron

• PVC

• Bakelite

Which metal aprons are worn by radiographer to protect him from radiation?

• Mercury coated apron

• Lead apron

• Copper apron

• Aluminimised apron

Nylon-66 is not

• condensation polymer

• polyamide

• both (a) and (b)

• None of the above