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प्रश्न
Draw the structures of veronal and thymine.
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उत्तर
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संबंधित प्रश्न
The Zieglar-Natta catalyst is used in the preparation of _______.
(A) LDPE
(B) PHBV
(C) PAN
(D) HDPE
Answer the following in one sentence.
Identify 'A' in the following reaction:
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.
What type of intermolecular force leads to high-density polymer?
Answer the following in one sentence.
Identify thermoplastic and thermosetting plastic from the following:
- PET
- Urea formaldehyde resin
- Polythene
- Phenol formaldehyde resin
Answer the following.
Write the reaction of the formation of Nylon 6.
Answer the following.
Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.
Answer the following.
Name the polymer type in which following linkage is present.
\[\begin{array}{cc}\ce{- C - O -}\\||\phantom{.....}\\
\ce{O\phantom{.....}}\end{array}\]
Answer the following.
Draw the structures of polymers formed from the following monomers
H2N–(CH2)5 – COOH
Name and draw structure of the repeating unit in natural rubber.
Answer the following.
Write name and formula of raw material from which bakelite is made.
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.
Attempt the following:
Write the chemical reactions involved in the manufacture of Nylon 6,6.
Write preparation, properties, and uses of Teflon.
Write the structure of isoprene and the polymer obtained from it.
Write the name of the catalyst used for preparation of high density polythene polymer.
Monomer used for preparation of polyacrylonitrile is _____________
write the structure of the monomer used in natural rubber.
Write preparation of low density polythene.
Write chemical reaction for preparation of the following.
Neoprene
Write the name and formulae of the monomers used for the preparation of dacron.
Write two uses and two properties of polythene.
Explain vulcanization of rubber.
Define rubber.
Which among the following polymers is obtained from styrene and 1-3-butadiene?
Which among the following polymers is used for making handles of cooker?
Which of the following catalysts is used in preparation of terylene?
Identify the catalyst used in the manufacture of high density polythene.
Which of the following polymers is used as insulation for cables?
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 their repeating units given in Column II.
| Column I | Column II |
| (i) Acrilan |
(a) \[\begin{array}{cc} |
| (ii) Polystyrene | (b) \[\begin{array}{cc} \ce{Cl}\phantom{.......}\\ |\phantom{........}\\ \phantom{}\ce{-(CH2 - C = CH - CH2)\underset{n}{-}} \end{array}\] |
| (iii) Neoprene | (c) \[\begin{array}{cc} \phantom{................................}\ce{CN}\\ \phantom{..............................}|\\ \ce{-(CH2 - CH = CH - CH2 - CH2 - CH)\underset{n}{-}} \end{array}\] |
| (iv) Novolac | (d) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{.......}\ce{CN} \end{array}\] |
| (v) Buna—N | (e)  |
| (f) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{......}\ce{Cl} \end{array}\] |
Which one of the following polymers are prepared by addition polymerization?
Polymer used in bullet proof glass is ______.
Which among the following polymers has high tensile strength and is used to obtain tyre cords?
Which of the following is a polymer of enzyme?
Which of the foolowing polymer is used in the manufacture of insulators.
The monomer of natural rubber is ______.
Write the preparation of viscose rayon.
Write the name of the monomer of natural rubber.
Name and draw structure of the repeating unit in natural rubber.
Name and draw the structure of the repeating unit in natural rubber.
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.
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 the structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
