Class 6 Science Chapter 3 MCQ

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.

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. Fabric is cloth or other material produced by weaving together with cotton, nylon, wool, silk, or other threads. Fabrics are used for making things such as clothes, curtains, and sheets.

Jute is not suitable for making clothes because they are rough and coarse. Therefore, they are used for making gunny bags.

Rainy season is the best season for cultivation of jute. It is grown in Bihar, Assam and West Bengal.

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.

In ancient Egypt, cotton as well as flax were cultivated near the river Nile and were used for making fabrics.

The fruits of the cotton plant (cotton bolls) are about the size of a lemon. After maturing, the bolls burst open and the seeds covered with cotton fibres.

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.

Sericulture is the cultivation of silkworms to produce silk. Silviculture is the art and science of manipulating forest vegetation to enhance forest growth and establish new forest stands and wildlife habitat. Cultivation of mulberry plants is called moriculture. Apiculture is the scientific method of rearing honeybees.

Jute is obtained from the stem of the jute plant.

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

Takli, charkha, hands-pindle 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

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

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.

A single yarn used to make a fabric called “knitting”. Process of arranging two sets of yarns together to make a fabric called “weaving”.

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”.

In India, jute is mainly grown in West Bengal, Bihar and Assam.

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.