81. The chemical name for melamine is
A
1, 3, 5-triamino-2, 4, 6-triazine
B
2, 4, 6-triamino-1, 3, 5-triazine
C
2-amino-1, 3, 5-triazine
D
2, 4-diamino-1, 3, 5-triazine
Answer :
2, 4, 6-triamino-1, 3, 5-triazine
82. Acrilan is a hard, horny and a high melting material. Which of the following represents its structure?
A
B
C
D
Answer :
83. Which of the following is not an example of addition polymer ?
A
Polystyrene
B
Nylon
C
PVC
D
Polypropylene
Answer :
Nylon
84. The compound which cannot be used as a plasticizer, is
A
$$di$$ - $$n$$ - butylphthalate
B
tricresyl phosphate
C
$$di$$ - $$n$$ - octyphthalate
D
diethyl phthalate
Answer :
diethyl phthalate
85. Caprolactum is used for the manufacture of :
A
Nylon - 6
B
Teflon
C
Terylene
D
Nylon - 6, 6
Answer :
Nylon - 6
86.
Monomer of 
is
A
2-methylpropene
B
styrene
C
propylene
D
ethene
Answer :
2-methylpropene
is 2 - methylpropene or isobutene, 
88.
Which of the following polymers can be formed by using the following monomer unit?
A
Nylon-6, 6
B
Nylon-2-nylon-6
C
Melamine polymer
D
Nylon 6
Answer :
Nylon 6
89. The monomers of biodegradable polymer, nylon 2-nylon 6 are
A
glycine + adipic acid
B
glycol + phthalic acid
C
phenol + urea
D
glycine + amino caproic acid
Answer :
glycine + amino caproic acid
90. Which one is classified as a condensation polymer ?
A
Dacron
B
Neoprene
C
Teflon
D
Acrylonitrile
Answer :
Dacron
