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प्रश्न
Answer the following in one sentence.
Identify thermoplastic and thermosetting plastic from the following:
- PET
- Urea formaldehyde resin
- Polythene
- Phenol formaldehyde resin
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उत्तर
- Thermoplastic: Polythene, PET
- Thermosetting plastic: Urea formaldehyde resin, Phenol formaldehyde resin
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संबंधित प्रश्न
Write any ‘two’ uses of terylene.
Write the chemical reaction to prepare novolac polymer.
Bakelite is the polymer of:
(a) Benzaldchyde and phenol
(b) Acetaldehyde and phenol
(c) Formaldehyde and phenol
(d) Formaldehyde and benzyl alcohol
Write the formulae of the raw materials used for preparation of Dextran.
The Zieglar-Natta catalyst is used in the preparation of _______.
(A) LDPE
(B) PHBV
(C) PAN
(D) HDPE
Write the structure of melamine.
Draw the structures of veronal and thymine.
Write the monomers of the following polymer :
Choose the correct option from the given alternatives.
Which of the following is made up of polyamides?
Answer the following in one sentence.
What type of intermolecular force leads to high-density polymer?
Answer the following.
Draw the structures of polymers formed from the following monomers
H2N–(CH2)5 – COOH
Identify condensation polymers and addition polymers from the following.
Attempt the following:
Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N
Write preparation, properties, and uses of Teflon.
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
Monomer used for preparation of polyacrylonitrile is _____________
Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________
Write preparation of low density polythene.
Write chemical reactions for the preparation of high-density polythene.
Define rubber.
Explain the reactions involved in the preparation of viscose rayon.
The following structure represents the polymer:
\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]
Which of the following polymer is used in paints?
Identify additional polymers from the following.
I. \[\begin{array}{cc}
\ce{-(CH2 - CH -)_{{n}}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]
II. \[\ce{-(CH2 - CH = CH - CH2 -)_{{n}}}\]
III. \[\ce{-(CO(CH2)4 - CONH(CH2)6NH -)_{{n}}}\]
IV.
How many isoprene units are present in abscisic acid?
Novolac is obtained from ____________.
Which of the following polymers is a heteropolymer?
Which of the following catalysts is used in preparation of terylene?
Which among the following polymers is obtained from CH2 = CH – CN by polymerisation?
Identify the monomers used in the preparation of Novolac.
Which among the following is an example of addition polymer?
The commercial name of polyacrylonitrile is ______.
Which of the following polymers, need atleast one diene monomer for their preparation?
(i) Dacron
(ii) Buna-S
(iii) Neoprene
(iv) Novolac
Match the polymers given in Column I with the type of linkage present in them given in Column II.
| Column I | Column II |
| (i) Terylene | (a) Glycosidic linkage |
| (ii) Nylon | (b) Ester linkage |
| (iii) Cellulose | (c) Phosphodiester linkage |
| (iv) Protein | (d) Amide linkage |
| v) RNA |
Phenol and formaldehyde undergo condensation to give a polymar (A) which on heating with formaldehyde gives a thermosetting polymer (B). Name the polymers. Write the reactions involved in the formation of (A). What is the structural difference between two polymers?
Which of the following is not a copolymer?
Which of the following is an example of polyester?
Which of the following polymers is synthesized using a free radical polymerisation technique?
Nylon threads are made of ______.
Polymer used in bullet proof glass is ______.
Which of the following polymers do not involve cross linkages?
The catalyst used for the polymerisation of olefins is ______.
Which of the following polymer is used for manufacturing of buckets, dustbins, pipes, etc?
Name and draw the structure of the repeating unit in natural rubber.
Name and draw the structure of the repeating unit in natural rubber.
Name the compound which reacts with formaldehyde to produce ethyl alcohol.
Name and draw structure of the repeating unit in natural rubber.
Another name of terylene is ______.
The monomer used in preparation of teflon is ______.
Name and draw the structure of the repeating unit in natural rubber.
Name and draw the structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
Name and draw structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
Write the structure of isoprene and the polymer obtained from it.
