|Number of Questions: 42|
|Created by: Ankita Patil|
|Tags: botany manmade materials materials of daily use synthetic fibres and plastics fibre to fabric: plant fibre fibre to fabric chemistry fibres and plastics natural fibres tissue and tissue system polymer chemistry|
Yarn is made from fibers.
yes, Yarn is made from fibres by spinning.
What is fleece?
Which of the following is considered as animal fibre?
Animals fibres are those which largely consists protein. Some of the animals have the property to provide such kind of father or fur which can be used to produce wool. All the given examples are animal fibre use to form a different type of wool.
The rearing of silkworms to obtain silk is called __________:
Pashmina a type of wool is obtained from:
Pashmina a very fine quality of wool is obtained from goats.
Which of the following is an example of soft and fine wool?
Which of the following does not yield wool?
Deer do not yield wool. Camels, sheep, goats, yaks yield wool. Wool is a natural fiber.
Which of the following are synthetic fibres?
Acrylic is a synthetic fibre resembling wool used to knit sweaters, socks, and shawls.
Polystyrene is also a synthetic fibre used for making protective packagings such as packing peanuts and CD and DVD cases, containers such as clamshells, lids, bottles, trays, tumblers, disposable cutlery and in the making of models.
Therefore, option C and D both are correct.
Which of the following fibre can be drawn into very fine fibres that can be woven like any other yarn?
Terylene is a popular polyester. It can be drawn into very fine fibres that can be woven like any other yarn.
The process of removing the fleece of sheep along with a thin Layer of skin is called _________.
Cotton fibers are separated from seeds by:
Combing, it is a method for preparing carded fibre for spinning. Combing is divided into linear and circular combing. The Noble Comb is an example of circular combing. The French comb is an example of linear combing. The process of combing is accompanied by filling, a process of evening out carded or combed top making it suitable for spinning. Combing separates short fibres using a rotating ring or rectilinear row of steel pins. The fibres in the 'top' produce have been straightened and lie parallel to each other. When combing wool, the discarded short fibres are called boils and are ground up into shoddy.
Match the following with the correct answers.
(a) Scouring (i) Yields silk fibers
(b) Mulberry leaves (ii) Cleaning sheared skin
(c) Sheep (iii) Food of silk worm.
(d) Cocoon (iv) Wool yielding animal.
(a) Scouring means cleaning the sheared skin of animals.
Natural fibres can be defined as :
Natural fibres are fibres extracted from plants and animals.
These clothes are used best in summer :
Cotton is a natural fiber it has the tendency to absorb the sweat. Also, its a breathing fabric and so allows air to pass through keeping your body cool. cotton is the best fabric to use in summer.
Coir is also known as:
Coir is extracted from the tissues surrounding the seed of the coconut palm.
A yarn can be split into fine strands of a thread. State True or False.
Yarn itself is a loose thread and they can be split into thin strands.
Yarn can be converted into fabrics by the process of spinning.
The process of making yarn from fibres is called spinning. Weaving is the process used to convert yarn into fabric.
Materials which are not obtained from plants and animals are called :
Fibres which are not obtained from plants and animals and are made in a laboratory using petrochemicals are called synthetic fibre.
Moonj is used to make furniture.
The thick part of the grass is used in making furniture items; its outer skin makes for thatch. The leaf of the grass is called moonj.
Silk fibre is drawn from the cocoon of _________.
Silkworm, its larvae are fed with mulberry leaves, and, after the fourth moult, they climb a twig placed near them and spin their silken cocoons.
The fibre that burns completely leaving no residue is:
Cotton is the fibre that bums completely, leaving no residue.
It is advised to wear clothes in summer made of:
In summer, it is advised to wear clothes made of cotton. We sweat a lot in summers. Cotton is a good absorber of water. Thus, it absorbs sweat from our body and exposes the sweat to the atmosphere, making its evaporation faster.
When you visit a hill station, which of the following you should use for shopping?
Hill stations are crowded and have waste disposal problem. Thus, plastic use should be minimum. Some hill stations like Nainital, have banned use of polyethene bags.
Which part of the cotton plant yields cotton balls?
The fruit part of cotton plant yields cotton balls.
Preshrink cotton is called:
Preshrink cotton is known as sanforized cotton.
Which of the following statements is not true?
The outer covering of coconut is called coir.
Fibers are a class of hair-like materials that are continuous "'filaments"' or are in discrete elongated pieces, similar to pieces of thread. They can be used as a component of composite materials.
Which of the following is an animal fiber?
Animal fibers are generally made up of proteins.
_____________ fibres are obtained from plants and animals.
Natural fibres are obtained from plants and animals.
___________________ are obtained from cotton plant and sheep respectively.
Cotton is obtained from cotton plant and wool is obtained from sheep.
Animal fibers generally comprise of:
Animal fibers are natural fibers that consist largely of particular proteins. These proteins include collagen, keratin and fibroin.
Which of the following fibre is not a natural fibre?
Nylon is a man-made synthetic fibre prepared by the process of polymerisation.
Bed sheets, curtains, tents, parachutes etc are made from :
Fibres which are man-made are called synthetic fibres and which occurs naturally are called natural fibres. Rayon (synthetic fibre), when mixed with cotton (natural fibre), is used to making curtains, bedsheets etc. of clothes, ropes, seat-belts, curtains, sleeping bags, parachutes, tents etc.
Raw materials for most of the natural fabrics are obtained from :
Some of the most common raw materials for the production of natural fabrics are cotton, wool, flax, ramie and wax. Since wax is a petroleum product, C is the correct answer.
Which of the following represents correct statement(s)?
The correct statements will be-
(B) Cotton and jute are examples of fibers obtained from plants.
The botanical name of moonj plant is:
The botanical name of this plant is Sachatum moonja.
Use of charkha was popularized by Mahatma Gandhi as part of the Independence movement.
Use of charkha was popularized by Mahatma Gandhi as part of the Independence movement. He encouraged people to wear clothes made of homespun yarn and disapprove of imported cloth made in Britain. Charkha is a handmade device used to spun yarn.
Which of the following are natural fibres?
________ is usually picked by hands and fibres are then separated from the seeds by combing.
Cotton is usually picked by hands and fibres and then separated from the seeds by combing.
Which of the following is monomer of natural rubber?
Natural rubber is an addition polymer that is obtained as a milky white fluid known as the latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene). Since isoprene has two double bonds, it still retains one of them after the polymerization reaction. Natural rubber has the cis configuration for the methyl groups. So, the correct option is A i.e. Isoprene.
In India, jute is cultivated during which season?
The suitable climate for growing jute is a warm and wet climate, which is offered by the monsoon climate during the fall season, immediately followed by summer. Temperatures ranging from 25-30 °C and relative humidity of 70%–90% are favorable for successful cultivation. Jute requires 160-200 cm of rainfall weekly with extra needed during the sowing period. River basins or alluvial or loamy soils are best for jute cultivation. Jute cultivation in red soils may require a high dose of manure.
Fibres can be classified as natural fibres and synthetic fibres.
Fibres can be classified as natural fibres and synthetic fibres.
Natural fibres are obtained from plants and animals. The examples of such fibres include cotton, jute, silk and wool.
Synthetic fibres are made from chemical substances, which are not obtained from plant or animal sources. Examples include polyester, nylon and acrylic.