Question

Identify the odd one out:
a) Wood, paper, coal, iron
b) Aluminium , iron, copper, plastic
c) Wax, cork, boat, iron
d) Plastic, wood, rubber, steel

Answer 1

Answer:

a. Iron

b.plastic

c.boat

D. rubber......

Answer 2

Answer:

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Explanation:

Coal

Plastic

Boat

Wood

Steps are -

The cotton picked up from the plants still, has its seed in it. These seeds are pulled out of the cotton with the help of steel combs. The process by which cotton fibre is separated from seeds by steel combs is called ginning. Ginning can be done manually and also by machine. The ginned cotton is very light and fluffy occupies a lot of space. For its transportation, the ginned cotton is pressed tightly and packed in bales. Each bale roughly weighs about 200 kg.

SPINNING COTTON YARN

It is the process of changing fibre into yarn. The raw cotton is supplied to the industry in the form of bales. This cotton is converted into yarn through the following steps. The process of making yarn from fibres is called spinning.

Spinning machine

• The straightened fibres of cotton are called silver

• Cotton bales are cleaned from leaves and dried stem to make silver.

• Dust, dirt and dried leaves are removed from the bales of raw cotton.

• After drying, it is fed into a machine where a rope-like structure is formed from cotton fibre.

• The standard cotton fibre (or silver) is converted into yarn on spinning machine.

COTTON GINNING PLANT

• During spinning, the standard and the strand is pulled and twisted at the same time. Twisting makes the yarn stronger. The spinning of threads or cotton yarn There are several ways by which fabric is made from yarn. But we will study only two main processes:

• Weaving

• Knitting

WEAVING

It is the process of converting yarn into cloth. The process of arranging two sets of yarn together to make a fabric is called weaving. The process of weaving is illustrated here by showing weaving with help of different types of paper sheets (showing different sets of yarn)

Paper Strips

Weaving cloth

The process of weaving is done on a loom. Weaving is done manually on a handloom. Weavers weaving on a small scale use handlooms. On a large scale, cotton fabrics are made by big machines that run on electricity. These machines are called power looms.

• The big reels of yarn are called bobbins. These bobbins are sent to a weaving machine where they are converted to cloth.