CBSE Class 6 Science Fibre To Fabric Worksheet Set 05

A. FILL IN THE BLANKS :

Question 1. Plant fibers are obtained from ---------------------- and ----------------------
Answer: cotton, jute (or flax, coir)
In simple words: Plant fibers come directly from plants like cotton and jute.

Exam Tip: Remember that cotton and jute are the most common examples of plant fibers studied in class.

Question 2. Animal fibers are ---------------------- and ----------------------
Answer: wool, silk
In simple words: Animal fibers are obtained from animals, such as sheep wool and silkworm silk.

Exam Tip: Wool comes from the fleece of sheep/goats, and silk comes from the cocoons of silkworms.

Question 3. The process of removing ---------------------- from the cotton fiber is called ginning.
Answer: seeds
In simple words: Ginning is the process of separating cotton seeds from cotton fibers.

Question 4. The cotton plant bears white or yellow ----------------------
Answer: flowers
In simple words: Cotton plants produce flowers that change color before turning into cotton bolls.

Exam Tip: Cotton flowers are initially pale yellow or white and turn reddish later.

Question 5. The jute fiber is obtained from the ---------------------- of the jute plant.
Answer: stem
In simple words: Jute fibers are extracted from the stem of the jute plant.

Exam Tip: Always specify 'stem' for jute and 'fruit/boll' for cotton.

Question 6. ---------------------- And ---------------------- fibers are rough.
Answer: Jute, Coir (or Hemp)
In simple words: Natural plant fibers like jute and coir have a coarse and rough texture.

Exam Tip: Coir and jute are rough, whereas cotton and silk are relatively smooth and soft.

Question 7. A continuous piece of cloth, generally used for making dress material is called ----------------------
Answer: fabric
In simple words: Fabric is cloth used to stitch garments.

Exam Tip: Understand the hierarchy: Fiber -> Yarn -> Fabric.

Question 8. ----------------------, ---------------------- and ---------------------- are examples of unstitched pieces of fabrics.
Answer: Saree, dhoti, lungi (or turban)
In simple words: Unstitched fabrics are worn directly without being sewn into a specific shape.

Exam Tip: Saree and dhoti are classic Indian examples of unstitched garments.

Question 9. The process of arranging two sets of yarns together to make a fabric is called ----------------------
Answer: weaving
In simple words: Weaving uses two sets of yarns crossing each other at right angles.

Exam Tip: Weaving is done on looms using two sets of yarn.

Question 10. Cotton clothes made from home spun cotton, is commonly called ----------------------
Answer: khadi
In simple words: Khadi is hand-spun and hand-woven cloth.

Exam Tip: Khadi has historical significance in India associated with Mahatma Gandhi.

Question 11. The process of twisting the fibers so as to make a stronger thread is called ----------------------
Answer: spinning
In simple words: Spinning turns loose fibers into strong yarns.

Exam Tip: Do not confuse spinning (fiber to yarn) with weaving (yarn to fabric).

Question 12. Fabric from yarns is made by ---------------------- and ----------------------
Answer: weaving, knitting
In simple words: Yarns are converted into fabrics through weaving or knitting.

Exam Tip: These are the two primary methods of fabric making from yarn.

Question 13. Fabrics are made from ----------------------, which in turn are made from ----------------------
Answer: yarns, fibers
In simple words: Fibers make yarns, and yarns make fabrics.

Question 14. The fruits of cotton plant are called ----------------------
Answer: cotton bolls
In simple words: Cotton bolls are the fruit pods of the cotton plant.

Exam Tip: Cotton bolls are about the size of a walnut.

Question 15. Fibers obtained from plants and animals are called ---------------------- fibers.
Answer: natural
In simple words: Natural fibers are gifts of nature from living sources.

Exam Tip: Natural fibers include both plant and animal sources.

Question 16. Fibers obtained from chemicals are called ---------------------- fibers.
Answer: synthetic (or artificial/man-made)
In simple words: Synthetic fibers are manufactured from chemical substances in industries.

Exam Tip: Examples include nylon, polyester, and acrylic.

Question 17. ---------------------- And ---------------------- are some examples of synthetic fibers.
Answer: Nylon, polyester (or acrylic)
In simple words: Nylon and polyester are man-made chemical fibers.

Exam Tip: Keep examples handy for comparative questions.

Question 18. A simple device used for spinning is called ----------------------
Answer: takli (or charkha)
In simple words: Takli and charkha are hand devices used to spin yarn.

Exam Tip: Takli is a hand spindle; charkha is another well-known spinning device.

Question 19. The type of soil best for growing cotton is ---------------------- soil.
Answer: black
In simple words: Black soil and warm climate are ideal for cotton cultivation.

Exam Tip: Black cotton soil is rich in moisture-retaining clay.

Question 20. Jute fiber is also called ---------------------- fiber.
Answer: golden
In simple words: Jute is often referred to as the golden fiber due to its color and high economic value.

Exam Tip: Golden fiber refers specifically to jute.

B. STATE WHETHER THE FOLLOWING STATEMENTS ARE TRUE OR FALSE.

Question 1. Yarn is made from fibers.
Answer: True
In simple words: Fibers are twisted together to make yarn.

Exam Tip: Core definition statement; always true.

Question 2. Spinning is a process of making fibers.
Answer: False
In simple words: Spinning is the process of making yarn from fibers, not making fibers themselves.

Exam Tip: Watch out for swapping 'fibers' and 'yarn' in definitions.

Question 3. Jute is the outer covering of coconut.
Answer: False
In simple words: The outer covering of a coconut gives coir fiber, whereas jute comes from the stem of the jute plant.

Exam Tip: Coconut outer covering is coir, not jute.

Question 4. The process of removing seed from cotton is called ginning.
Answer: True
In simple words: Ginning separates seeds from harvested cotton.

Exam Tip: Standard textbook fact.

Question 5. Weaving of yarn makes a piece of fabric.
Answer: True
In simple words: Weaving intertwines two sets of yarns to form fabric.

Exam Tip: Correct relation between yarn and fabric.

Question 6. Silk fiber is obtained from the stem of a plant.
Answer: False
In simple words: Silk is an animal fiber obtained from the cocoon of a silkworm.

Exam Tip: Silk is animal-based, not plant-based.

Question 7. Polyester is a natural fiber.
Answer: False
In simple words: Polyester is a synthetic fiber made from chemical sources.

Question 8. Cotton grows best in sandy soil.
Answer: False
In simple words: Cotton grows best in black soil, not sandy soil.

Exam Tip: Black soil holds moisture effectively for cotton plants.

Question 9. The spinning of fibers decreases the strength of yarn.
Answer: False
In simple words: Spinning twists fibers together, which actually increases the strength of the yarn.

Exam Tip: Twisting fibers increases friction and strength.

Question 10. Nylon clothes are best suited for kitchen.
Answer: False
In simple words: Nylon catches fire easily and melts, making it unsafe for the kitchen.

Exam Tip: Synthetic clothes should not be worn near fire or in kitchens.

Question 11. The process of removing jute from its stalks is called ginning.
Answer: False
In simple words: Removing jute fibers from rotted stalks is called retting, whereas ginning is for cotton seeds.

Exam Tip: Match terms correctly: Ginning for cotton; Retting for jute.

Question 12. Loom is a machine used for removing seeds from raw cotton.
Answer: False
In simple words: A loom is used for weaving fabric from yarn, not for removing seeds.

Exam Tip: Looms are weaving devices.

Question 13. Jute fiber is used for making fine clothes.
Answer: False
In simple words: Jute is coarse and rough, so it is used for making sacks, gunny bags, and ropes rather than fine garments.

Exam Tip: Jute is rough; cotton and silk are used for clothing.

Question 14. Nylon and polyester are synthetic fibers.
Answer: True
In simple words: Both nylon and polyester are man-made chemical fibers.

Exam Tip: Standard definition of synthetic fibers.

Question 15. Ethylene is a natural fiber.
Answer: False
In simple words: Ethylene is a chemical compound used in making plastics and polymers, not a natural fiber.

Exam Tip: Natural fibers are plant or animal-based.

Question 16. Knitting of a yarn makes a piece of fabric.
Answer: True
In simple words: Knitting uses a single yarn to make fabric, like sweaters and socks.

Exam Tip: Knitting can be done using knitting needles or machines with one continuous yarn.

Question 17. Cotton seed cake is used as animal fodder.
Answer: True
Answer: After extracting oil, cotton seed cake is nutritious food for cattle.

Exam Tip: Useful byproduct application of cotton farming.

C. ANSWER THE FOLLOWING QUESTIONS :

Question 1. Classify the following fibers as natural or synthetic: Nylon, wool, cotton, silk, polyester, jute.
Answer: Natural fibers: Wool, cotton, silk, jute.
Synthetic fibers: Nylon, polyester.
In simple words: Natural fibers come from plants and animals, while synthetic fibers are made by humans from chemicals.

Exam Tip: Always categorize clearly using bullet points or headings for full marks.

Question 2. From which parts of the plant cotton and jute are obtained?
Answer: (a) Cotton is obtained from the fruits (cotton bolls) of the cotton plant.
(b) Jute is obtained from the stem of the jute plant.
In simple words: Cotton comes from fruit pods, and jute comes from plant stalks.

Exam Tip: Precise plant parts must be mentioned to secure full credit.

Question 3. Name two items that are made from coconut fiber.
Answer: Two items made from coconut fiber (coir) are ropes and floor mats (or brushes, mattresses).
In simple words: Coconut fiber is tough and used to make sturdy mats and ropes.

Exam Tip: Coir is another name for coconut fiber.

Question 4. Explain the process of making yarn from fiber.
Answer: The process of making yarn from fibers is called spinning. In this process, fibers from a mass of cotton are drawn out and twisted. This brings the fibers together to form a strong continuous thread or yarn. Devices like takli and charkha are used for spinning.
In simple words: Pulling and twisting loose fibers together creates strong yarn.

Exam Tip: Mention the term 'spinning' and give examples of tools like charkha.

Question 5. Why is it necessary to spin the fibers in order to make yarn?
Answer: Loose fibers are weak and cannot be directly used to make fabrics because they easily pull apart. Spinning twists the fibers together, creating friction and binding them tightly, which gives the yarn high tensile strength and durability.
In simple words: Twisting gives fibers strength so they do not break easily.

Exam Tip: Focus on the keywords 'strength', 'twisting', and 'cohesion'.

Question 6. How is jute fiber removed from the dried jute stalks?
Answer: The harvested jute stalks are immersed in water for a few days until the stem rots and fibers get loosened. This rotting process is called retting. Once retted, the fibers are separated by hand from the rotted stalks.
In simple words: Jute stalks are soaked in water to rot the stem so the fibers can be easily peeled off.

Question 7. Give the uses of a. Cotton b. Jute
Answer: (a) Uses of Cotton: Used for making clothes, bedsheets, cotton wool for medical purposes, and home furnishings.
(b) Uses of Jute: Used for making gunny bags, ropes, sacks, carpets, and coarse packing materials.
In simple words: Cotton is used for soft clothing, while jute is used for heavy packaging and ropes.

Exam Tip: Contrast the soft applications of cotton with the heavy-duty uses of jute.

Question 8. Define the following: a. ginning b. spinning c. weaving
Answer: (a) Ginning: The process of removing cotton seeds from harvested cotton bolls by combing.
(b) Spinning: The process of drawing out and twisting fibers together to make yarn.
(c) Weaving: The process of arranging two sets of yarns together at right angles to make a fabric.
In simple words: Ginning removes seeds, spinning makes yarn, and weaving makes fabric.

Exam Tip: These three definitions form the core of the entire chapter.

Question 9. What are natural fibers? Give two examples?
Answer: Fibers that are obtained from natural sources such as plants and animals are called natural fibers. Examples: Cotton and wool.
In simple words: Natural fibers come directly from nature without chemical manufacturing.

Exam Tip: Always include both plant and animal examples.

Question 10. What are synthetic fibers? Give two examples?
Answer: Fibers that are made by human beings from chemical substances (petrochemicals) in industries are called synthetic fibers. Examples: Nylon and polyester.
In simple words: Man-made fibers created in factories using chemicals.

Exam Tip: Mention 'man-made' or 'chemical' in your definition.