Tag: synthetic fibres

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Questions Related to synthetic fibres

Multiple choice chemistry substances in daily use rayon and nylon synthetic fibres synthetic fibres or threads polyester and acrylic

Which of the following statements is incorrect?

  1. Nylon clothings can with stand high temperature and are, therefore, good to wear in summers.

  2. Thermosetting plastics do not become soft on heating.

  3. Addition polymers are formed without the elimination of byproduct molecules.

  4. Natural rubber is obtained as latex from rubber trees.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nylon is a synthetic fiber that is not breathable and can melt or become uncomfortable in high heat, making it unsuitable for summer clothing. The other statements are scientifically accurate.

Multiple choice chemistry substances in daily use rayon and nylon synthetic fibres synthetic fibres or threads polyester and acrylic

Read the following statement and mark the correct answer.


I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered as a synthetic fibre as it is regenerated from cellulose.
III. PET bottles and jars are made up of polyesters. 

  1. Statement I is false, II and III are true

  2. Statement I is true, II and III are false

  3. Statement I and II are false, III is true

  4. Statement II is true, I and II are false
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Terylene is a polyester, not a silk-like synthetic fiber (which is usually rayon or nylon). Rayon is regenerated cellulose, and PET is a type of polyester, making statements II and III true.

Multiple choice chemistry substances in daily use rayon and nylon synthetic fibres synthetic fibres or threads polyester and acrylic

The fibre obtained from cellulose is:

  1. polyester

  2. nylon

  3. acrylic

  4. rayon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The fibre obtained from cellulose is rayon.


Because of the reconversion of the soluble compound to cellulose, rayon is referred to as a regenerated cellulose fibre. 

There are several types of rayon fibers in commercial use today, named according to the process by which the cellulose is converted to the soluble form and then regenerated.

Thus, option $D$ is correct.

Multiple choice chemistry substances in daily use rayon and nylon synthetic fibres synthetic fibres or threads polyester and acrylic

The material similar to silk in appearance is :

  1. nylon

  2. rayon

  3. polyester

  4. terylene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The material similar to silk in appearance is rayon. 

Since rayon resembles silk in appearance, it is called artificial silk.

It is a man-made fibre obtained from a natural source wood pulp.

Hence the correct option is B.
Multiple choice chemistry substances in daily use polyester and acrylic rayon and nylon synthetic fibres

Which of the following do not contain polyester fabric?

  1. Terrywool

  2. Terrycot

  3. Terylene

  4. Orlon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Terrywool, Terrycot and Terylene all contain polyester.


Orlon is a polymer of vinyl cyanide. It is made by the addition of acrylonitrile molecules. It is a brand of the synthetic, acrylic textile fibre of the lightweight and wrinkle-resistant fabric.

Option D is correct.