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1
JEE Main 2022 (Online) 24th June Morning Shift
MCQ (Single Correct Answer)
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-1
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Which of the following is an example of polyester?

A
Butadiene-styrene copolymer
B
Melamine polymer
C
Neoprene
D
Poly-$$\beta$$-hydroxybutyrate-co-$$\beta$$-hydroxyvalerate
2
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
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-1
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Monomer units of Dacron polymer are :
A
ethylene glycol and phthalic acid
B
ethylene glycol and terephthalic acid
C
glycerol and terephthalic acid
D
glycerol and phthalic acid
3
JEE Main 2021 (Online) 31st August Evening Shift
MCQ (Single Correct Answer)
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-1
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Which among the following is not a polyester?
A
Novolac
B
PHBV
C
Dacron
D
Glyptal
4
JEE Main 2021 (Online) 31st August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Monomer of Novolac is :
A
3-Hydroxybutanoic acid
B
phenol and melamine
C
o-Hydroxymethylphenol
D
1, 3-Butadiene and styrene
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