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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Mention two uses of LDP. - Chemistry

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प्रश्न

Mention two uses of LDP.

टीपा लिहा
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उत्तर

Uses of LDP:

  1. It is mainly used in the preparation of pipes for agriculture, irrigation, domestic water line connections as well as insulation to electric cables.
  2. It is also used in submarine cable insulation.
  3. It is used in producing extruded films, sheets, mainly for packaging and household uses like in preparation of squeeze bottles, attractive containers, etc.
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पाठ 15: Introduction to Polymer Chemistry - Short Answer Questions (Type-I)

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
पाठ 15 Introduction to Polymer Chemistry
Short Answer Questions (Type-I) | Q 5.2

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

The Zieglar-Natta catalyst is used in the preparation of _______.

(A) LDPE

(B) PHBV

(C) PAN

(D) HDPE


Write the structure of melamine.


Write the structures of the monomers used for getting the following polymers

Melamine – formaldehyde polymer


Write the monomers of the following polymer : 


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.


Write preparation, properties, and uses of Teflon.


Answer the following.

Write main specialities of Buna-S, Neoprene rubber?


Nylon 6, 6 is a condensation polymer of hexamethylenediamine and _____________


Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________


Monomer of natural rubber is __________


write the structure of the monomer used in natural rubber.


Write chemical reaction for preparation of the following.

Buna-S


Write chemical reaction for preparation of the following.

Neoprene


Write the name and formulae of the monomers used for the preparation of dacron.


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 polymer is used in paints?


How many isoprene units are present in abscisic acid?


Select the CORRECT match for both the polymers.


\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]

Which of the following is CORRECT about polymer 'X'?


Which of the following polymers is obtained from chloroprene?


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 catalysts is used in the preparation of dacron?


Which among the following monomers is used to prepare Teflon?


Which of the following pair of compounds is used as monomers for bakelite?


Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation.


Match the polymers given in Column I with their repeating units given in Column II.

Column I Column II
(i) Acrilan

(a) \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

(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)  \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\]

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?


Trans - form of poly isoprene is:-


Which of the following is an example of polyester?


The catalyst used for the polymerisation of olefins is ______.


Identify the monomer used to prepare neoprene.


Write the structure of isoprene and the polymer obtained from it.


Name the compound which reacts with formaldehyde to produce ethyl alcohol.


Another name of terylene is ______.


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.


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.


Name and draw structure of the repeating unit in natural rubber.


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