Chemistry - Study Mode

[#491] Bakelite is a co-polymer of Phenol and
Correct Answer

(A) Formaldehyde

Explanation

Solution: Bakelite is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde.

[#492] Which of the following is not an addition polymer?
Correct Answer

(A) Nylon

Explanation

Solution: Nylon is not an addition polymer.

[#493] The polymer used in making plastic crockery is
Correct Answer

(D) Melamine

Explanation

Solution: Melamine formaldehyde resin is the polymer used for making plastic crockery. Its monomers are melamine and formaldehyde. Uses : It is used in making plastic (unbreakable) crockery.

[#494] The polymerisation of which often following is used in manufacturing of polythene in industry ?
Correct Answer

(D) Ethylene

Explanation

Solution: Manufacture of poly(ethene) (polyethylene) Poly(ethene) is made by several methods by addition polymerization of ethene, which is principally produced by the cracking of ethane and propane, naphtha and gas oil.

[#495] Natural rubber is the polymer of :
Correct Answer

(A) Isoprene

Explanation

Solution: Natural Rubber is a Polymer derived from Isoprene.