Q. No.
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1. Bakelite
2. Melamine
3. Nylon-66
4. Terylene
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Which one of the following is not a condensation polymer?
1. Melamine
2. Glyptal
3. Dacron
4. Neoprene
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Dacron is a polymer of :
1. Propylene and para
2. Benzolic acid and ethanol .
3. Terepthalic acid and ethylene glycol.
4. Benzoic acid and para
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2. PHBV
3. Buna-N
4. Nylon-6, 6
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2. Alternate cis - and trans-configuration
3. Random cis - and trans-configuration
4. All cis-configuration
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Regarding cross-linked or network polymers, which of the following statements is incorrect?
1. They contain covalent bonds between various linear polymer chains,
2. They are formed from bi and tri functional monomers.
3. Examples are bakelite and melamine
4. They contain strong covalent bonds in their polymer chains
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