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CBSE - XII Science - Chemistry - Polymers
A polymer sample contains 30%(by weight) of chains with molecular weight 10000, 30%(by weight) of the chains with molecular weight 20000, and the rest of chains with molecular weight 30000. Calculate the number average and weight average molecular weight of the sample.
Asked by me.shekharhimanshu
19th June 2020,
12:03 PM
CBSE - XII Science - Chemistry - Polymers
Write the structures of monomers used to obtain the following polymers: (a) Natural rubber (b) PVC (c) Nylon-6,6
Asked by sanjeet.kumar
12th March 2019,
2:18 PM
CBSE - XII Science - Chemistry - Polymers
How is polyethylene prepared?
Asked by Topperlearning User
22nd June 2016,
12:24 PM
CBSE - XII Science - Chemistry - Polymers
What is Buna-S? How is it prepared?
Asked by Topperlearning User
22nd June 2016,
12:23 PM
CBSE - XII Science - Chemistry - Polymers
Given one example each of: (i) addition polymers, (ii) condensation polymers, (iii) copolymers
Asked by Topperlearning User
22nd June 2016,
10:58 AM
CBSE - XII Science - Chemistry - Polymers
What are biodegradable polymers?
Asked by Topperlearning User
22nd June 2016,
10:56 AM
CBSE - XII Science - Chemistry - Polymers
Write the structures of monomers used in the preparation of: (a) Teflon (b) PMMA Or (a) How does vulcanization change the character of natural rubber? (b) Why are the numbers 6,6 and 6 put in the names of nylon-6,6 and nylon-6 respectively?
Asked by Topperlearning User
22nd June 2016,
10:54 AM
CBSE - XII Science - Chemistry - Polymers
what makes buna-n resistant to petro, lubricating oil and organic solvents?
Asked by ayushi pandey
17th July 2014,
10:18 PM
CBSE - XII Science - Chemistry - Polymers
What is natural rubber?
Asked by Topperlearning User
23rd June 2014,
4:35 PM
CBSE - XII Science - Chemistry - Polymers
Mention two important uses of each of the following: (i) Bakelite (ii) Nylon 6
Asked by Topperlearning User
23rd June 2014,
4:23 PM
CBSE - XII Science - Chemistry - Polymers
Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Neoprene (iii) Nylon-6
Asked by Topperlearning User
23rd June 2014,
4:22 PM
CBSE - XII Science - Chemistry - Polymers
What are the uses of Bakelite?
Asked by Topperlearning User
23rd June 2014,
3:07 PM
CBSE - XII Science - Chemistry - Polymers
How Bakelite is prepared?
Asked by Topperlearning User
23rd June 2014,
2:30 PM
CBSE - XII Science - Chemistry - Polymers
What is Bakelite?
Asked by Topperlearning User
23rd June 2014,
2:28 PM
CBSE - XII Science - Chemistry - Polymers
Draw the structure of the monomer of each of the following polymers: (i) Polyvinyl chloride (PVC) (ii) Nylon- 6
Asked by Topperlearning User
13th June 2014,
2:08 PM
CBSE - XII Science - Chemistry - Polymers
Write the names and structures of the monomers of the following polymers: (i) Bakelite (ii) Nylon-6 (iii) Polythene
Asked by Topperlearning User
13th June 2014,
1:56 PM
CBSE - XII Science - Chemistry - Polymers
Mention two important uses of each of the following: (i) Bakelite (ii) Nylon 6
Asked by Topperlearning User
13th June 2014,
1:55 PM
CBSE - XII Science - Chemistry - Polymers
What is Perlon? How it is prepared?
Asked by Topperlearning User
13th June 2014,
12:45 PM
CBSE - XII Science - Chemistry - Polymers
Give examples of synthetic rubber?
Asked by Topperlearning User
12th June 2014,
3:35 PM
CBSE - XII Science - Chemistry - Polymers
What is PMMA, PAN and PVC?
Asked by Topperlearning User
12th June 2014,
3:32 PM
CBSE - XII Science - Chemistry - Polymers
What is a copolymerisation reaction? Give example.
Asked by Topperlearning User
12th June 2014,
3:30 PM
CBSE - XII Science - Chemistry - Polymers
How is nylon-6,6 prepared?
Asked by Topperlearning User
12th June 2014,
1:38 PM
CBSE - XII Science - Chemistry - Polymers
What are the uses of polyethylene?
Asked by Topperlearning User
12th June 2014,
1:32 PM
CBSE - XII Science - Chemistry - Polymers
sir give me all important things in chapter and tricks to learn structures ...
Asked by Hemandra Singh
21st May 2014,
8:56 PM
