Isomerisation of Alkynes

Q. Write the mechanism of free radical polymerization of ethene.

Q. When cholorobenzene is heated with copper powder in a sealed tube, it gives

1. Benzene
2. Diphenyl
3. Naphthalene
4. Phenol

Q. (i) What is the role of benzoyl peroxide in the polymerization of ethene?
(ii) Identify the monomers in the following polymer:



(iii) Arrange the following polymers in the increasing order of their intermolecular forces:
Nylon-6, 6, Polythene, Buna-S

Q. 34. If 1, 3-dibromopropane reacts with zinc and NaI the product formed will be (1) propene (2) propane (3) cyclopropane (4) hexane

Q. Write the structures of the monomers used for getting the following polymers:
(a) Polyvinyl chloride (PVC)
(b) Melamine - formaldehyde polymer
(c) Buna - N

Q.

Which of the following monomers on polymerisation gives polyorymethylene also known as polyacetal and which does not exist in isotactic, syndiotactic and a tactic form????? Options: (a)methoxyethene (b)formaldehyde (c)ethoxyethene (d)propene...... And pls let me know why?? I found this question in the work book provided by byjus...

Q. 30.Mechanism of formation of alkene by tertiary alcohol in presence of Copper .

Q.

Which of the following is not a polyamide?

[AFMC 2000; CBSE PMT 2001; KCET 2001]

1. Nylon-6
2. Nylon-66
3. Glyptal
4. Protein

Q.

The C at the end of PVC (plastic) stands for ___________.

Q. When chlorine is passed through propene at ${400}^{o}C$, which of the following is formed?

1. PVC
2. Allyl chloride
3. Vinyl chloride
4. 1, 2-Dichloroethane

Q. The compounds used in plastic industry and polymer industry respectively are :

1. Vinyl cyanide & Vinyl acetate
2. Vinyl acetate & Vinylcyanide
3. Acrylonitrile & Ethylidene
4. Ethylidene cyanide & Vinyl cyanide

Q. PVC is the polymer of :

1. Ethyl chloride
2. Vinyl chloride
3. Allyl chloride
4. Ethynyl chloride

Q. Westron has the formula:

1. $C{F}_{2}C{l}_2$
2. $CH{F}_3$
3. $CHC{l}_3$
4. $C_2{H}_{2}C{l}_4$

Q.

Write the names and structures of the monomers of the followinf polymers=

a) Neoprene

b) Teflon

c) PVC

d)pAN

Q. Propyne on passing through red hot copper tube forms:

1. toluene
2. benzene
3. mesitylene
4. bromine

Q. Justify the role of ter-butyl peroxide in the polymerisation of ethene.

Q.

what LDP and HDP signify? how are they prepared ?

Q. Formation of polyethylene from calcium carbide takes place as follows:
CaC₂ + H₂O -> Ca(OH)₂ + C₂H₂ -> C₂H₄
​ ​n(C₂H₄) -> ( -CH₂-CH₂- )_n
Determine the amount of polyethylene possibly obtainable from 64.0 kg CaCl₂ .

Q. When chlorine is passed through propene at ${400}^{o}C$, which of the following is formed?

1. Allyl Chloride
2. Propyl chloride
3. PVC
4. 1, 2 - Dichloroethane

Q. Acetylene does not show which of the following reactions ?

1. Condensation.
2. Polymerization.
3. Addition reactions.
4. Combustion reaction.

Q. The compound used in plastic industry is :

1. Vinyl acetate
2. Vinyl cyanide
3. Ethylidene diacetate
4. Ethyl formate

Q. Discuss The polymerization reaction of alkynes.