Olympiad Science - Fibre to Fabric
Exam Duration: 45 Mins Total Questions : 30
Which of the following devices was popularised by Mahatma Gandhi as a part of the independence movement?
- (a)
Handloom
- (b)
Shuttle
- (c)
Charkha
- (d)
Machine
Charkha is a device used for spinning
Which of the following does not belong to the group formed by others?
- (a)
Wool
- (b)
Polyester
- (c)
Silk
- (d)
Cotton
In the given options polyester is an artificial fibre
Complete the given correlation
Silk: Cocoon, Wool:?
- (a)
Hair of rabbit
- (b)
Cotton plant
- (c)
Fleece of sheep
- (d)
Jute of hemp.
The given correlation shows fibre and its sources. Silk is obtained from silkworm cocoon and wool from the fleece of sheep.
Which part of the cotton plant yields cotton bolls?
- (a)
Leaf
- (b)
Fruit
- (c)
Seed
- (d)
Flower
Cotton boll is the fruit of cotton plant
Which of the following processes involves the separation of seeds from cotton bolls?
- (a)
Winnowing
- (b)
Carding
- (c)
Ginning
- (d)
Spinning
Fibres are separated from the seeds of cotton boll. This process is called ginning.
Which of the following is made from coconut fibres?
- (a)
Sweaters
- (b)
Shoes
- (c)
Mattresses
- (d)
Sarees
Coconut fibres are used to make mattresses
Which of the following processes involves conversion of yarn into cloth?
- (a)
Carding
- (b)
Weaving
- (c)
Spinning
- (d)
Dyeing
The process of converting yarn into cloth on a hand loom is called weaving.
Which of the following is formed when fibres are twisted by spinning?
- (a)
Warp
- (b)
Weft
- (c)
Fabric
- (d)
Yarn
Yarn is made by spinning
Fibres made from which of the following is suited to be used in cold places?
- (a)
Wool
- (b)
Linen
- (c)
Cotton
- (d)
Silk
Woollen clothes are preferred to wear in cold regions.
Cotton and woollen clothes are rough when compared to silk. Which of the following statements supports the above statement?
- (a)
They have many uneven folds
- (b)
They have many even folds
- (c)
The folds are small and even.
- (d)
The fibres are smooth
Cotton and woollen clothes are rough because they have many uneven folds.
Which of the following is/are the characteristics of woollen clothes?
- (a)
Heating our body
- (b)
Absorbing heat from sunlight
- (c)
Not allowing body heat to escape
- (d)
All of these
Woollen clothes keep our body warm by not allowing body heat to escape
Which of the following statements is true about woollen fibre?
- (a)
Wool is a poor insulator of heat
- (b)
Wool is a good insulator of heat
- (c)
Wool does not absorb water
- (d)
Wool is cheaper than cotton.
Wool is a good insulator of heat
Which of the following isused by tailors to cut and stitch clothes made of cotton for us ?
- (a)
Cotton bolls
- (b)
Cotton bales
- (c)
Cotton fibres
- (d)
Cotton fabrics
Cotton fabrics are out and stitched to make clothes.
Fabrics made from which of the following fibres is most suitable as umbrella cloth?
- (a)
Cotton
- (b)
Wool
- (c)
Polyester
- (d)
Nylon
Polyester is suitable to make umbrella.
Which of the following should come in the empty box given below?
- (a)
Spindle
- (b)
Handpicking
- (c)
Ginning
- (d)
Handloom
Cotton fibres are made into yarns by using spindle.
In which of the following machines the yarns are placed lengthwise on the frames of handloom?
- (a)
Takli
- (b)
Weft
- (c)
Warp
- (d)
Shuttle
During weaving the yarns are placed lengthwise on the frame of the loom is called warp.
which of the following is obtained from the stem of a plant?
- (a)
Jute
- (b)
Wool
- (c)
Cotton
- (d)
Silk
Jute is obtained from the jute plant by a process called retting.
Cotton is preferred to be worn in a hot humid place like India. Which of the following statements is true about the given statement?
- (a)
They are strong and light
- (b)
They have air spaces between them
- (c)
They have air spaces inside them
- (d)
They are obtained from plants.
Cotton clothes have air spaces between them.
In which of the following processes the fibres are separated from the seeds?
- (a)
Picking
- (b)
Thrashing
- (c)
Combing
- (d)
Pulling
Cotton fibres are separated from the seeds by combing.
Which of the following does not belong to the group formed by others?
- (a)
Polyester
- (b)
Silk
- (c)
Rayon
- (d)
Terylene
Silk is a natural fibre.
The cultivation of which of the following needs a black soil and warm climate?
- (a)
Cotton
- (b)
Jute
- (c)
Flax
- (d)
Coconut
Cotton is cultivated in black soil and warm climate.
Which part of a cotton plant is used to obtain fibres?
- (a)
Stem
- (b)
Bolls or fruit
- (c)
Branches and leaves
- (d)
Roots
Cotton fibre is obtained from cotton bolls.
Cotton is a preferred fabric for summers. This is so because
- (a)
it absorbs sweat
- (b)
it does not stick to the skin.
- (c)
it allows free circulation of air and for heat to escape easily
- (d)
all of these.
Cotton is the preferred garment for hot summer season.
A piece of cotton fabric was burnt. The smell of burning was similar to the burning of
- (a)
meat.
- (b)
wool.
- (c)
paper
- (d)
silk
Flax fibres are obtained from flax plant and it gives us linen. Others are made by chemical processes. Polyester and rayon are also man-made fibres. Hemp, coir, ramie, sisal, bast and kenaf are natural fibres. The smell of burning of paper and cotton fabric is similar because they both are composed of plant fibre, that is, cellulose. Silk, wool and meat are animal products. These are rich in proteins. Silk and wool are protein fibres.
Which one of these states of India is not known for jute cultivation?
- (a)
West Bengal
- (b)
Assam
- (c)
Bihar
- (d)
Madhya Pradesh
Jute is cultivated in the rainy season mainly in West Bengal, Assam and Bihar. The plant is harvested in its flowering stage.
Which is the correct sequence of making a cotton fabric?
- (a)
spinning⟶ ginning ⟶ knitting
- (b)
ginning ⟶ spinning ⟶ knitting
- (c)
spinning ⟶ ginning ⟶weaving
- (d)
ginning⟶ spinning ⟶ weaving
Ginning gives cotton fibres from seeds. Spinning converts these fibres into yarn. Weaving arranges these yarns into fabric.
Mekhela is a popular dress of_______________.
- (a)
Mizoram
- (b)
Rajasthan
- (c)
Gujarat
- (d)
Assam
Assamese women wear Mekhela.
Select the right match
Column I | Column II |
i) mulberry tree | A) cotton |
ii) bolls | B) retting |
iii) jute | C) silk |
- (a)
i-C; ii-A; iii-B
- (b)
i-B; ii-A; iii-C
- (c)
i-A; ii-C; iii-B
- (d)
i-B; ii-C; iii-A
The fruits of cotton plants are the cotton bolls which burst open on maturing. A cotton field which is ready to be harvested looks like a field covered with snow. The stems of the harvested jute plants are immersed in water for a few days to rot. This process is called retting of jute. Mulberry tree is closely associated with the production of silk as silkmoth feeds only on mulberry leaves.
Which one of these is a stitched garment?
- (a)
lungi
- (b)
saree
- (c)
dhoti
- (d)
vest
Lungi, turban, dupatta, saree, dhoti are all un-stitched garmnets.
Find the option which is incorrectly paired.
- (a)
coir - coconut
- (b)
flax - natural fibre
- (c)
coir - mats
- (d)
wool - carbohydrate
Wool is made up of protein fibres. Cotton, flax, jute, coir, etc. are made up of cellulose fibres (a kind of inedible carbohydrate). Cellulose is a plant product only and is not produced by animals. All plant cells have cellulose in them.