Short Q & A -
Q1: What are natural fibres? Give example.
Ans : The fibres of some fabric are obtained from plants and animals. These are called natural fibres. For example-cotton, jute, silk etc are natural fibres.
Q2: Which of these are natural fibres –
These all are natural fibres.
Q3: Write the difference between natural and synthetic fibres.
Ans : The fibres of some fabric are obtained from plants and animals. These are called natural fibres. For example-cotton, jute, silk etc. The fibres that are made from chemical substances are called synthetic fibres. For example-nylon, polyester etc.
Q4: What is ginning?
Ans : Cotton fibres are separated from the seeds by combing. This process is known as ginning. Machines are also now used for ginning.
Q5: Define weaving.
Ans : The process of arranging two sets of yarns together to make a fabric is called weaving. Weaving of fabric is done on looms.
Q6: What happens after maturing of fruit of cotton plant (cotton bolls)?
Ans : After maturing, the bolls burst open and seeds covered with cotton fibres can be seen. Then the cotton can be picked.
Q7: How is spinning done on large scale?
Ans : Spinning is done on large scale with the help of spinning machines. After spinning yarns are used for making fabric.
Q8: Where does cotton wool come from?
Ans : Cotton wool is grown in fields. Plants are grown at places having black soil and warm climate.
Q9: What will happen if we pull the yarn from torn pair of socks? Why so?
Ans : A single yarn gets pulled out continuously as the fabric gets unravelled. It is because they are made of knitted fabric.
Q10: What are looms?
Ans : Looms are those on which weaving of fabric is done. They are either hand operated or power operated.
Q11: Choose the correct option-
1. Cotton is obtained from ____________of plant. (seed/stem)
2. Nylon is ____________fibre.(natural/synthetic)
3. Jute is obtained from ____________. (plant/animal)
Q12: Match the correct option-
Silk- Animal fibre
Charkha - Spinning
Polyester - Synthetic Fibre
Jute - Plant Fibre
Long Q & A -
Q1: What is done in the process of spinning? Name any device used for spinning.
Ans: The process of making yarn from fibres is called spinning. In this process, fibres from a mass of cotton wool are drawn out and twisted. This brings the fibres together to form a yarn. A device used for spinning is charkha.