On the basis of mode of formation, polymers can be
classified as:
1. Addition polymers only.
2. Condensation polymers only.
3. Co-polymers.
4. Both addition and condensation polymers.
Rubber is heated with sulphur and the process is known as:
1. Galvanization.
2. Vulcanization.
3. Bessemerization.
4. Sulphonation.
Buna-S is a synthetic copolymer of:
1. Styrene and buta-1,3-diene.
2. Styrene and ethylene.
3. 1,3-Butadiene and ethylene.
4. None of the above.
Match the polymers given in Column I with their chemical names given in Column II.
Column I | Column II |
A. Nylon-6 | 1. Polyvinyl chloride |
B. PVC | 2. Polyacrylonitrile |
C. Acrilan | 3. Polycaprolactum |
D. Natural rubber | 4. cis-polyisoprene |
Codes
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 2 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 3 | 2 | 1 |
The monomer units of PTFE are:
1. Cl2CH-CH3
2. F2C=CF2
3. F3C-CF3
4. FClC=CF2
Peroxide initiated polymerizations occur via -
1. Hydrocarbon combustion
2. Natural process synthesis
3. Isomeric saponification
4. Free radical chain propagation
The catalyst used in the manufacture of polythene by Ziegler method is:
1. Titanium tetrachloride and triphenyl galium
2. Titanium tetrachloride and triethyl aluminium
3. Titanium dioxide
4. Titanium isopropoxide
The reagent that is used for converting propylene to polypropylene is:
1. TiCl3 + K/THF
2. TiCl4 + Al(C2H5)3
3. TiCl3 + (CH3)2Mg
4. TiCl4 + CH3(CH2)3Al
Monomer of neoprene is:
1. | |
2. | |
3. | |
4. |
Polyacrylonitrile, characterized by the repeating unit is made from the monomer:
1.
2.
3.
4.