A. FILL IN THE BLANKS.
1. Cotton plants grow well in _____ soil.
Ans: black
2. Cotton is obtained from the _____ of the cotton plant, called _____.
Ans: fruit, bolls
3. The body coat of sheep is called the ______.
Ans: fleece
4. Wool is obtained from the body coat of animals like the ____, _____ or _____.
Ans: sheep, goat, camel
5. Jute is obtained from the _____ of jute plant.
Ans: bark (stem)
B. MATCH THE FOLLOWING:
1. Fibres into threads a. dyeing
2. Thread into fabric b. finishing
3. Colouring the fabric c. spinning
4. Making patterns on fabric d. weaving
5. Making fabric smooth and shiny e. printing
Ans:
1. Fibres into threads c. spinning
2. Thread into fabric d. weaving
3. Colouring the fabric a. dyeing
4. Making patterns on fabric e. printing
5. Making fabric smooth and shiny b. finishing
C. TICK THE CORRECT OPTION.
1. Which one of these is not a man-made fibre?
(a) nylon (b) tereyline (c) linen (d) rayon
Ans: linen
2. From the following, the only incorrectly matched ‘pair’ is-
(a) Silk-mulberry (b) jute-stem
(c) cotton-seeds (d) coir-outer covering of coconut
Ans: cotton-seeds
3. The process, of pulling and twisting of strands to make a fibre, is known as-
(a) printing
(b) spinning
(c) weaving
(d) dyeing
Ans: spinning
4. ‘Weaving’ is done by using machines called-
(a) taklis (b) charkhas
(c) looms (d) needles
Ans: looms
5. Jute and cotton plants grow well, respectively, in-
(a) Alluvial, and black, soils
(b) Black, and alluvial, soils
(c) Black, and ordinary, soils
(d) Ordinary, and alluvial, soils
Ans: alluvial, and black, soils
D. ANSWER THE FOLLOWING QUESTIONS IN BRIEF.
1. How are clothes important for us?
Ans: Clothes protect ourselves from heat, cold, rain and germs.
2. Define the term ‘natural fibres’.
Ans: Fibres, which are obtained from natural sources, that is, plants and animals, are called natural fibres.
3. Give two examples of plant fibres.
Ans: Cotton and jute are two examples of plant fibres.
4. Name the kind of soil that is suitable for growing jute plants.
Ans: Alluvial soil is suitable for growing jute plants.
5. Where is coir obtained from?
Ans: Coir is obtained from the outer covering of coconut.
E. ANSWER THE FOLLOWING QUESTIONS.
1. State the conditions that help in growth of cotton plant.
Ans: i) Black soil is suitable for the growth of cotton plant.
ii) Warm and humid climates, having temperature of over 160 C, provide the most suitable conditions for the growth of the cotton plant.
2. Why do we need to use ‘fresh soil’ for cultivating jute plant every year? State any three uses of jute.
Ans: i) Jute plant uses up the fertility of the soil to a large extent. Fresh soil is, therefore, needed every year for growing jute plants.
ii) Jute is used for making ropes, gunny bags and mats.
3. Give the difference between ‘spinning’ and ‘weaving’.
Ans:
Spinning
Weaving
The process of twisting the raw fibres together to make yarn, is called spinning.
The process of making clothes from yarn is called weaving.
Charkha is used for spinning.
Loom is used for weaving.
4. Write, in correct sequence, the names of the steps involved in the production of cloth.
Ans: The steps involved in the production of cloth are,
i) collecting fibres from different sources
ii) spinning
iii) weaving
iv) dyeing
v) printing
vi) finishing
vii) tailoring
5. Differentiate between natural and synthetic fibres. State any three advantages of synthetic fibres over natural fibres.
Ans:
NATURAL FIBRES
SYNTHETIC FIBRES
Fibres, obtained from natural sources, like plants and animals, are called natural fibres.
Fibres, made from chemicals, that are prepared in factories are called synthetic fibres.
Cotton, Jute, Linen are some examples of natural fibres.
Nylon, terylene and rayon are some examples of synthetic fibres.
Three advantages of Synthetic fibres over natural fibres
They are stronger, wrinkle-free, do not shrink and are not spoiled by moths.
LEARNING SCIENCE
Friday, 28 January 2022
STD-6, CHAPTER-14: FABRIC FROM FIBRE, EXERCISE QUESTION ANSWERS
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