Q. No.In the reaction–
Reagent X is–
1. Triethylaluminium and titanium tetrachloride.
2. Triethyl aluminum.
3. Zeigler Natta Catalyst.
4. Both 1 & 3
Plastic household crockery is prepared by using :
1. Melamine and tetrafluoroethane.
2. Malonic acid and hexamethylene imine.
3. Melamine and vinyl acetate.
4. Melamine and formaldehyde.
The initial reaction in the formation of bakelite is an example of:
1. Aromatic electrophilic substitution
2. Aromatic nucleophilic substitution
3. Free radical reaction
4. Aldol reaction
The polymer that is used as a substitute for wool in making commercial fibres is -
1. Melamine
2. Nylon-6, 6
3. Polyacrylonitrile
4. Buna-N
The incorrect match among the following options is:
| 1. | Terylene— condensation polymer of terephthalic acid and ethylene glycol. |
| 2. | Teflon— thermally stable cross-linked polymer of phenol and formaldehyde. |
| 3. | Perspex— a homopolymer of methyl methacrylate. |
| 4. | Synthetic rubber — a copolymer of butadiene and styrene. |
Rubber is heated with sulphur and the process is known as:
1. Galvanization.
2. Vulcanization.
3. Bessemerization.
4. Sulphonation.
Melamine plastic crockery is a copolymer of:
1. HCHO and melamine.
2. HCHO and ethylene.
3. Melamine and ethylene.
4. None of the above.
The straight-chain polymer is formed by:
| 1. | Hydrolysis of followed by condensation polymerization. |
| 2. | Hydrolysis of followed by condensation polymerization. |
| 3. | Hydrolysis of by addition polymerization. |
| 4. | Hydrolysis of followed by condensation polymerization. |
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