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प्रश्न
Draw the structures of veronal and thymine.
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उत्तर
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संबंधित प्रश्न
Bakelite is the polymer of:
(a) Benzaldchyde and phenol
(b) Acetaldehyde and phenol
(c) Formaldehyde and phenol
(d) Formaldehyde and benzyl alcohol
Write the structure of melamine.
Choose the correct option from the given alternatives.
Which of the following is made up of polyamides?
Answer the following in one sentence.
Identify 'B' in the following reaction:
\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'
Answer the following in one sentence.
Define the term: Vulcanization
Answer the following.
Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.
Identify condensation polymers and addition polymers from the following.
Attempt the following:
Write the chemical reactions involved in the manufacture of Nylon 6,6.
Write the reaction involved in the formation of bakelite.
Attempt the following:
What is meant by LDP and HDP? Mention the basic difference between the same with suitable examples.
Write preparation, properties, and uses of Teflon.
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________
Write a chemical reaction for the preparation of the following polymer.
polyacrylonitrile
Mention two uses of LDP.
Write chemical reaction for preparation of the following.
Neoprene
Write the name and formulae of the monomers used for the preparation of dacron.
Explain vulcanization of rubber.
Explain the reactions involved in the preparation of viscose rayon.
Which among the following polymers is obtained from styrene and 1-3-butadiene?
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.
Identify the INCORRECT match.
Which among the following polymers can NOT be remoulded?
Which among the following catalysts is used in the preparation of dacron?
Which among the following monomers is used to prepare Teflon?
Which of the following monomers is used in the manufacture of Neoprene rubber?
Which among the following polymers is an example of addition polymer?
Which of the following polymer is used to make blankets?
Identify addition polymer from the following.
Which of the following is not a semisynthetic 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
Which of the following products is formed when benzaldehyde is treated with CH3MgBr and the addition product so obtained is subjected to acid hydrolysis?
F2C = CF2 is monomer of the polymer -
Which of the following polymer has ester linkage?
Which one of the following polymers are prepared by addition polymerization?
The catalyst used for the polymerisation of olefins is ______.
Answer the following.
Name and draw structure of the repeating unit in natural rubber.
Name the compound which reacts with formaldehyde to produce ethyl alcohol.
The monomer used in preparation of teflon is ______.
Write the structure and name of monomer of 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.
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.
Which from following statements is NOT true regarding neoprene?
Which among the following is a monomer of natural rubber?
