Hard plastic covers of telephone is made from the unit(s):

Methylmethacrylate

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Vinylacetate

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Neoprene

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Phenol and formaldehyde

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Solution

The correct option is D Phenol and formaldehyde
Bakelite (polymer made by the polymerisation of phenol and formaldehyde) is used for making of hard, plastic covers of telephones as it is non breakable. It is a thermosetting polymer which when once hardened cannot be melted back.

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Similar questions

Q. The hard, plastic covers of telephones are made of polymers of:

The hard plastic covers of telephones are made up of ___________

Which of the following articles made of plastics 'can be recycled' and which 'cannot be recycled' ? Give reasons for your choice.

Telephone instruments, Plastic toys, Cooker handles , Plastic covering on electrical wires, Electric switches, Ballpoint pens, Carry bags, Plastic bottles, Plastic chairs

Q. Categorise the materials of the following products into 'can be recycled' and 'cannot be recycled':
Telephone instruments, plastic toys, cooker handles, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs, electrical switches.

Question 8
Categorize the materials of the following products into 'can be recycled' and 'cannot be recycled'.
Telephone instruments, plastic toys, cooker handles, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs, electrical switches.

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Hard plastic covers of telephone is made from the unit(s):

The correct option is D Phenol and formaldehydeBakelite (polymer made by the polymerisation of phenol and formaldehyde) is used for making of hard, plastic covers of telephones as it is non breakable. It is a thermosetting polymer which when once hardened cannot be melted back.

The correct option is D Phenol and formaldehyde
Bakelite (polymer made by the polymerisation of phenol and formaldehyde) is used for making of hard, plastic covers of telephones as it is non breakable. It is a thermosetting polymer which when once hardened cannot be melted back.