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प्रश्न
Draw the structures of veronal and thymine.
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उत्तर
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संबंधित प्रश्न
Write any ‘two’ uses of terylene.
Write the reactions involved in the preparation of PVC
Bakelite is the polymer of:
(a) Benzaldchyde and phenol
(b) Acetaldehyde and phenol
(c) Formaldehyde and phenol
(d) Formaldehyde and benzyl alcohol
Write the monomers of the following polymer :
Answer the following in one sentence.
Identify 'A' in the following reaction:
Answer the following in one sentence.
Define the term: Vulcanization
Answer the following.
Write the reaction of the formation of Nylon 6.
Identify condensation polymers and addition polymers from the following.
\[\begin{array}{cc}\ce{-(CH2 - CH -)_{n}}\\
\phantom{....}|\\\ce{\phantom{.......}C6H5}
\end{array}\]
Identify condensation polymers and addition polymers from the following.
-(CH2 - CH = CH - CH2 -)n
Identify condensation polymers and addition polymers from the following.
-(CO(CH2)4 - CONH(CH2)6NH-)n
Identify condensation polymers and addition polymers from the following.
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
Write the structure of isoprene and the polymer obtained from it.
Monomer of natural rubber is __________
Write preparation of low density polythene.
Write chemical reactions for the preparation of high-density polythene.
Write two uses and two properties of polythene.
Define rubber.
Which among the following polymers is obtained from styrene and 1-3-butadiene?
\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]
Which of the following is CORRECT about polymer 'X'?
Novolac is obtained from ____________.
Which of the following polymers is a heteropolymer?
Which of the following catalysts is used in preparation of terylene?
Which of the following compounds is used to prepare orlon?
Which among the following polymers is obtained from CH2 = CH – CN by polymerisation?
Which among the following polymers is an example of addition polymer?
Which among the following polymers is used to manufacture chemical containers?
Identify addition polymer from the following.
Which among the following is an example of addition polymer?
The commercial name of polyacrylonitrile is ______.
Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation.
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 one of the following polymers are prepared by addition polymerization?
Which of the following polymers is synthesized using a free radical polymerisation technique?
Nylon threads are made of ______.
The catalyst used for the polymerisation of olefins is ______.
Which of the foolowing polymer is used in the manufacture of insulators.
Name and draw the structure of the repeating unit in natural rubber.
Name the compound which reacts with formaldehyde to produce ethyl alcohol.
Write the structure of isoprene and the polymer obtained from it.
Write the structure and name of the monomer of Nylon-6.
Write the structure of isoprene and the polymer obtained from it.
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.
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.
