Tag: fibres

Questions Related to fibres

To which of the following does the 4R principle apply the most?

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Synthetic fibre

  2. Natural fibre

  3. Metals

  4. Plastic

Show answer
Correct Option: D
Explanation:
Plastic is a man-made substance that cannot be broken down by natural microbial action. Hence, the 4R principle is applied to it. 

The 4 R principle is- ${\text{Refuse, Reduce, Reuse and Recycle}}$. This helps in reducing the harmful effect of plastic in the environment. 

Thus the correct answer is option A.

Bed sheets, curtain, tents, parachutes can be made from :

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Natural fibre

  2. Synthetic fibre

  3. Yarn

  4. Plastics

Show answer
Correct Option: A,B,C
Explanation:
Bed sheets, curtain, tents, parachutes are made from fabric like cotton, silk, nylon, rayon etc. and the fabric is a cloth produced by weaving or knitting textile fibers. 

These fibers can be obtained naturally from plant or animal sources like cotton seeds and silk, wool or can be synthesized like nylon or rayon.

Therefore, natural and synthetic fibers are used to make fabric.

Yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, or ropemaking. Thread is a type of yarn intended for sewing by hand or machine.

Plastics are synthetic polymers and not used in fabric production.

Hence, option A, B and C are correct.

The small fluffy fibres are:

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. bolls

  2. burrs

  3. reels

  4. combs

Show answer
Correct Option: B
Explanation:

Burrs are the small filthy fibers. This has a pattern of knots. 

$X$ is a thread of filament from which $Y$ is made. If prepared from plants and animals, it is known as $Z$ fibres whereas by humans it is known as $W$ fibres. Synthetic fibres are nylon, rayon, polyester, acrylic etc.

What is $Z$?

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Plant fibre

  2. Animal fibre

  3. Natural fibre

  4. Artificial fibre

Show answer
Correct Option: C
Explanation:

Fibre is the basic unit of raw material having a suitable length, pliability, and strength for conversion into yarns and fabrics/cloth/material. 

A fibre of extreme length is a filament. Fibres can occur naturally or can be produced artificially. 

Here, X is a fibre, Y is the cloth/fabric. Z is the natural fibre and W is the artificial or human-made fibre.

Plant and animal fibre are natural fibres, and artificial fibre are man-made fibres such as rayon.

Therefore, option C is correct.

The eggs of silkworms are stored in:

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Wooden box

  2. Metal box

  3. Strips of the cloth

  4. Plastic box

Show answer
Correct Option: C
Explanation:

The female silk moth lays 200 eggs at a time, these eggs are stored on strips of cloth. The stored eggs are then kept under hygienic conditions, suitable temperature and humidity.

Which of the following house hold articles is not made up of fibre?

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Cloth

  2. Table

  3. Rope

  4. Carpet

Show answer
Correct Option: B
Explanation:

Table is made up of wood or wood pulp but cloth, rope and carpet are made up of various types of fibres and yarns which form these materials.


Hence, the correct option is $\text{B}$

Endoscope is made up of:

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. glass wool

  2. optical fibres

  3. optical glass

  4. lead crystal glass

Show answer
Correct Option: B

Synthetic fibres are also called as :

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. rayon fibres

  2. artificial or human made fibres

  3. natural fibres

  4. collective fibres

Show answer
Correct Option: B
Explanation:

Synthetic fibres are also called as artificial or human made fibres since they are made by human in factories.

Spandex is used in garments because :

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. elasticity.

  2. strength.

  3. biodegradable.

  4. Both A and B.

Show answer
Correct Option: D
Explanation:

Spandex, Lycra or elastane is a synthetic fiber known for its exceptional elasticity. It is stronger and more durable than natural rubber. Because of its elasticity and strength (stretching up to five times its length), spandex has been incorporated into a wide range of garments, especially in skin-tight garments. A benefit of spandex is its significant strength and elasticity and its ability to return to the original shape after stretching and faster drying than ordinary fabrics.

Which of the following can define molecules in the liquid state?

chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

  1. Molecules vibrating in a fixed position and held in place by strong forces

  2. Molecules can rotate and roll over each other because the forces are moderately strong

  3. Molecules can move anyway in random because there are no forces holding the molecules together

  4. A state of matter which contains only charged particles

Show answer
Correct Option: B
Explanation:

In liquid, particles are loosely bound together by intramolecular forces. Unlike a solid, liquid has no fixed shape but instead has a characteristic readiness to flow and therefore takes on the shape of any container.

Forces between them are moderately strong as compare to solid.

Hence, option $B$ is correct.