Class 6 Science Chapter 3 MCQ

Generally, we obtained fibres from animal and plant sources called, “natural fibres” and those fibre which are made by human beings with the help of chemicals, are called “synthetic fibres” and mixed fibres are those fibres which are obtained by blending natural and synthetic fibres.

Cotton plants are usually grown at places having black soil and warm climate. There are some states in our country where cotton is grown such as Punjab, Gujrat, Maharashtra, Tamil Nadu, Madhya Pradesh, Rajasthan.

The process of making fabric by criss-crossing two sets of threads or yarns called weaving. Weaving of fabric is done on looms. The looms are either hand operated or power operated.

Fibres are then separated from the seeds by combing. This process is called ginning of cotton. Ginning was traditionally done by hand. These days, machines are also used for ginning.

Jute fibre is obtained from the stem of the jute plant. In India, jute is mainly grown in West Bengal, Bihar and Assam.

Takli, charkha, handspindle are used for spinning. The process of arranging two sets of yarns together to make a fabric is called weaving. Weaving of fabric is done on looms. The looms are either hand operated or power operated.

Silk industry began in China and was kept a closely guarded secret for hundreds of years. Later on, traders and travellers introduced silk to other countries.

Jute is obtained from the stem of the jute plant.

Jute stems are immersed in water for rotting as jute fibres can be extracted from the rotten stems easily. This process is known as “retting process”.

Jute fibre is obtained from the stem of the jute plant. In India, jute is mainly grown in West Bengal, Bihar and Assam.

Cotton plants are usually grown at places having black soil and warm climate.

Jute is known as the Golden Fibre. That’s an appropriate name for the yellowish-brown colour, shiny appearance.

The weaving of yarn to make fabrics is done by using “looms”. Loom is a device used for making fabrics by weaving yarn or threads.

Yarn is a long continuous length of interlocked fibre that is woven or knitted for forming garments. The thin strands, of thread that we see in clothing materials, are made up of thinner strands called fibres.

Jute fibre is obtained from the stem of the jute plant.

Cotton is world’s most popular plant fibre used to make clothes. Cotton has some properties as: cotton is a soft fabric. It lets air passes through it. Cotton absorbed sweat very quickly and evaporates it and so it cools the body.

There are some fibres which made from chemical substances, and they do not obtain from plant or animal sources. These are called synthetic fibres. Some examples of synthetic fibres are polyester, nylon and acrylic. In 1931, “Nylon” was made without using any natural raw material (from plant or animal). It was prepared from coal, water and air. It was the first fully synthetic fibre.

Use of charkha was popularised by Mahatma Gandhi as part of the Independence movement. He encouraged people to wear clothes made of homespun yarn and shun imported cloth made in the mills of Britain.

Husk and bones are not used for making fibres. Substances in option [A], [B] and [D] are used for making fibres.

Coconut fibre are used for making ropes because these fibres are rough and very hard and other use of coconut fibre is in making mattresses.

In ancient times people used the bark and big leaves of trees or animal skins and furs to cover themselves. The early Indians wore fabrics made out of cotton that grew in the regions near the river Ganga.

In ancient times, people used the bark and big leaves of trees or animal skins and furs to cover themselves.

Wool is obtained from the fleece (hair) of sheep or yak. The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called “shearing”.

Jute is known as the “Golden Fibre”. That’s an appropriate name for the yellowish-brown colour, shiny appearance. It is often known as “Patsun” in countryside area.

Jute bag is made up of plant fibre. Wool is most commonly obtained from sheep (animal fibre). Silk fibre is obtained from silkworm (animal fibre). Nylon is a synthetic fibre.