SELECT * FROM question_mgmt as q WHERE id=685 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=70 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Classify the following as addition and condensation polymers: Terylene, Bakelite, Polyvinyl chloride, Polythene.

Answer:

 

Addition polymers:

A polymer formed by direct addition of repeated monomers without the elimination of by product molecules is called addition polymers. Polyvinyl chloride, polythene.

Condensation polymers:

A polymer formed by the condensation of 2 or more than 2 monomers with the elimination of simple molecules like water, ammonia is called condensation polymer. Terylene, bakelite.


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='3' AND subId='9' AND ex_no!=0 AND status=1 and id!=685 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='3' AND subId='9' AND ex_no!=0 AND status=1 and id!=685 ORDER BY last_viewed_on desc limit 0,10

Comments

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  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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