Tag: synthetic fibres

Questions Related to synthetic fibres

Bed sheets are made up of:

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

  1. rayon and wool

  2. rayon and plastic

  3. rayon and nylon

  4. rayon and cotton

Show answer
Correct Option: D
Explanation:

Bedsheets are made by blended fibre i.e. a mixture of rayon and cotton. Rayon is a versatile fibre and is widely claimed to have the same comfort properties as natural fibres, although the drape and slipperiness of rayon textiles are often more like nylon. It can imitate the feel and texture of silk, wool, cotton and linen. The fibres are easily dyed in a wide range of colours.

Which of the following is a disadvantage of nylon?

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

  1. They do not shrink

  2. They are less resistant to sun light

  3. They are resistant to insects and molds

  4. They can be easily dyed

Show answer
Correct Option: B
Explanation:

Nylon fabrics have low resistance to sunlight. 


They are not suitable for curtains or draperies as it is weakened by the exposure to sunlight.

Hence the correct option is B.

The fibres of nylon is stronger than :

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

  1. steel wire of same thickness

  2. steel wire of different thickness

  3. plastic fibres

  4. rayon

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Correct Option: A
Explanation:

Nylon is a synthetic fibre which has certain chemical properties which makes their fibres strong.

The fibre which gives smell of plastic is: 

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

  1. rayon

  2. silk

  3. wool

  4. nylon

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Correct Option: D
Explanation:

Nylon fibre gives smell of plastic.

This is because it is very similar to plastic.
Rayon, Wool, and Silk are the natural polymers which do not have plastic like smell.

Which of the following statement is true?

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

  1. A nylon thread is stronger than a steel wire

  2. Rayon is a natural fibre made from wood pulp

  3. Cotton is not a polymer

  4. Fabric made from polyester can get wrinkles easily

Show answer
Correct Option: A
Explanation:

A. Nylon thread is stronger than steel wire because nylon fibre is made up of strong amide linkages which gives it strength.

B. Rayon is a regenerated fibre so it is not natural.

C. Cotton is a polymer of cellulose.

D. Polyester materials are wrinkle-free.

Nylon fibre is useful, because of following properties:

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

  1. soft, strong and light

  2. transparent, light and easy to wash

  3. strong, elastic and light

  4. hard, inexpensive and strong

Show answer
Correct Option: C
Explanation:

Nylon fibre is strong, elastic and light. It is lustrous and easy to wash.

A silk saree and a nylon saree, both of same length are put to dry under sun. Which one will dry faster?

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

  1. Silk saree

  2. Nylon saree

  3. Both will take same time

  4. Depends on weather condition

Show answer
Correct Option: B
Explanation:

Nylon has various characteristics like a higher impact resistance, a more rapid moisture absorption, greater elasticity and elastic recovery. Nylon absorbs moisture readily as compared to silk so nylon saree dries up faster than silk saree in the sun.

Ropes made of nylon and polyester are commonly used in cranes and elevators because :

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

  1. Nylon is inflammable

  2. It is a good conductor of heat and electricity

  3. It is very strong, fairly elastic and light weight

  4. It is heat resistant

Show answer
Correct Option: C
Explanation:

Ropes made of nylon and polyester are commonly used in cranes and elevators because It is very strong, fairly elastic and light weight.

Rayon is different from synthetic fibres because :

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

  1. it has a silk appearance

  2. it is obtained from wood pulp

  3. it can also be woven like those of natural fibres

  4. it is natural

Show answer
Correct Option: B
Explanation:

Rayon is manufactured regenerated cellulose fiber. It is made from purified cellulose from wood pulp which is converted into soluble compound which is chemically solidified to form synthetic fiber. Because rayon is manufactured from naturally occurring polymers, it is considered a semi-synthetic fiber.

Synthetic fibres having almost common property are:

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

  1. nylon and polyster

  2. nylon and plastics

  3. polyster and plastics

  4. all of the above

Show answer
Correct Option: A
Explanation:

Synthetic fibres having commmon property are nylon and polyster.