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The total number of lone pairs of electr...

The total number of lone pairs of electrons in melamine is:

A

12

B

8

C

10

D

6

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The correct Answer is:
D
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Polymers are made up of small molecules called monomers. Polymers which are formed by one type of monomer called homopolymers and which are formed by more than one type of monomers are called co-polymers. Natural polymers are biodegradable whereas systhetic polymers may or may not be. Addition or chain growth polymerization involves the repeated addition of monomers to the polymer chain. The monomers are unsaturated compounds and this type of polymerization takes placed by ionic (cationic or anionic) as well as free radical a series of condensation reactions between the monomers. Each monomer normally contains two functional groups. Branch chain polymers may be condensation polymers or addition but cross linked polymers are always condensation polymers. Total number of lone pairs of electrons in melamine is:

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HIMANSHU PANDEY-POLYMERS-Only One Correct Answer (Q.151 To Q.175)
  1. Nylon is an example of:

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  2. Which is the monomer of neoprene in the following?

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  3. The total number of lone pairs of electrons in melamine is:

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  4. The repeating unit present in nylon-6 is:

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  5. The monomeric unit of teflon consists of:

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  6. Which one of the following class of compounds is obtained by polymeriz...

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  7. Which one of the following is an exmaple of thermosetting polymers?

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  8. Which of the following polymer does not contain hydrogen bonding?

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  9. Which of the statement does not explain fibres?

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  10. Which of one of the following is classified as a copolymer?

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  11. The species which can best serve as an initiator for the cationary pol...

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  12. Which of the following is fully fluorinted polymer?

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  13. Benzoyl peroxide acts as an initiator for:

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  14. Which of the following monomers would be most reactive towards cationi...

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  15. Which statement below does not occur during the formation of an additi...

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  16. Complete the following free radial addition equation RO + CH(2) = CH...

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  17. Identify the addition polymer that would be produced from 2-chloro-2-b...

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  18. Bakelite is obtained form phenol by reacting with:

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  19. The polymer containing strong intermolecular forces, e.g., hydrogen bo...

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  20. Which one is classified as a condensation polymer ?

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