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Mention two uses of LDP. - Chemistry

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प्रश्न

Mention two uses of LDP.

टीपा लिहा

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

Explain the following term: Homopolymers


Bakelite is the polymer of:

(a) Benzaldchyde and phenol

(b) Acetaldehyde and phenol

(c) Formaldehyde and phenol

(d) Formaldehyde and benzyl alcohol

 


Based on molecular forces, what type of polymer is neoprene?


Draw the structures of veronal and thymine. 


Choose the correct option from the given alternatives.

Which of the following is made up of polyamides?


Answer the following in one sentence.

Define the term: Vulcanization


Answer the following in one sentence.

What type of intermolecular force leads to high-density polymer?


Answer the following.

Write the reaction of the formation of Nylon 6.


Answer the following.

Write the reaction of the formation of Terylene.


Answer the following.

Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.


Answer the following.

Match the following pairs:

Name of polymer Monomer
1. Teflon a. CH2 = CH2
2. PVC b. CF2 = CF2
3. Polyester c. CH2 = CHCl
4. Polythene d. C6H5OH and HCHO
5. Bakelite e. Dicarboxylic acid and polyhydoxyglycol

Answer the following.

Write name and formula of raw material from which bakelite is made.


Attempt the following:

Write the chemical reactions involved in the manufacture of Nylon 6,6.


Attempt the following:

Write preparation, properties and uses of Teflon.


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.


Write preparation of low density polythene.


Write the name of one example of each polymer in which following repeating units.

\[\begin{array}{cc}
\ce{(-CF2-CF2-), -[NH-(CH2)5-CO] -, -(CH2-CH-), (-CH2-CH2-)}\\
\phantom{............................}|\\
\phantom{..............................}\ce{CN}
\end{array}\]


Write two uses and two properties of polythene.


Define rubber.


Which among the following polymers is used for making handles of cooker?


The INCORRECT match for the polymer with its application is:


Identify the INCORRECT match.


Which of the following polymers is obtained from chloroprene?


Identify the polymer obtained by polymerization of n moles of acrylonitrile.


Which of the following catalysts is used in preparation of terylene?


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


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 of the following products is formed when benzaldehyde is treated with CH3MgBr and the addition product so obtained is subjected to acid hydrolysis?


Which of the following polymer has ester linkage?


Which one of the following polymers are prepared by addition polymerization?


Nylon threads are made of ______.


Which of the following polymers do not involve cross linkages?


Identify the monomer used to prepare neoprene.


Answer the following.

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


Answer the following.

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


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


How the Bakelite is prepared? Give the steps involved in the preparation.


The monomer used in preparation of teflon is ______.


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 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 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.


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


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