CBSE NCERT Solutions for Class 7 Science Chapter 3

CBSE NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric or अध्याय 3: रेशों से वस्त्र तक in हिंदी मीडियम free to download in PDF as well as View online without downloading. View in Video Format on latest NCERT Books for the academic session 2019 – 20. Download Class 7 Offline Apps and Discuss your views with your friends.



Class:7
Subject:Science – विज्ञान
Chapter 3:Fibre to Fabric

Table of Contents

CBSE NCERT Solutions for Class 7 Science Chapter 3

Fibre to Fabric: Question – Answers

7 Science Chapter 3: Nutrition in Plants

CBSE NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric is given below to use online. Download links are given at the Top of the page. View in Video Format or Visit to  हिंदी मीडियम or  Class 7 Science main page. Download Class 7 Science App for offline use.

CBSE NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric




CBSE NCERT Solutions for Class 7 Science Chapter 3 in PDF

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7 विज्ञान अध्याय 3 अभ्यास के प्रश्न उत्तर

NCERT Solutions for Class 7 Science अध्याय 3: रेशों से वस्त्र तक in हिंदी मीडियम is given below. Visit to English Medium or  Class 7 Science main page.

7 Science अध्याय 3: रेशों से वस्त्र तक



Class vii science chapter 3 answers
vii science ch. 3 solutions

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7 Science Chapter 3 Sols in Video

NCERT Solutions for class 7 Science Chapter 3 explanation with question answers in video format with complete description. Download Class 7 Apps in Hindi for offline use.

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Important Questions with Answers
  1. Silkworms secrete fibre made of
    (a) fat
    (b) cellulose
    (c) protein
    (d) nylon
  2. The rearing of silkworms for obtaining silk is called
    (a) cocoon
    (b) silk
    (c) sericulture
    (d) silviculture
  3. Selective breeding is a process of
    (a) selecting the offsprings with desired properties.
    (b) selecting the parents with desired properties.
    (c) selecting an area for breeding.
    (d) selecting fine hair for good quality wool.
  4. Which of the following is not a type of silk?
    (a) Mulberry silk
    (b) Tassar silk
    (c) Mooga silk
    (d) Moth silk
  5. The general process that takes place at a sheep shearing shed is
    (a) removal of fleece.
    (b) separating hair of different textures.
    (c) washing of sheep fibre to remove grease.
    (d) rolling of sheep fibre into yarn.
  6. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy?
    (a) Woollen shawl
    (b) Silk scarf
    (c) Animal fur cap
    (d) Leather jacket
  7. The term sericulture is used for
    (a) culture of bacteria.
    (b) rearing of silkworm.
    (c) making silk fabric from silk yarn.
    (d) production of sarees.
  8. Silk fibre is obtained from
    (a) fleece of sheep
    (b) cotton ball
    (c) cocoon
    (d) shiny jute stalk
  9. Reeling of silk is
    (a) a process of making silk reels.
    (b) spinning of silk fibres.
    (c) weaving of silk cloth.
    (d) the process of taking silk threads from cocoon.
  10. Wool fibre cannot be obtained from which of the following?
    (a) Goat
    (b) Llama
    (c) Alpaca
    (d) Moth



Answers
  • 1 (c)
  • 2 (c)
  • 3 (b)
  • 4 (d)
  • 5 (a)
  • 6 (a)
  • 7 (b)
  • 8 (c)
  • 9 (d)
  • 10 (d)

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What is meant by the term Rearing?

Rearing: It is raising and taking care of livestock (e.g. cows, buffaloes, goats etc.); for commercial purposes. These animals are fed, provided shelters and are bred for better yield like milk, meat, wool etc. For example, Sheep are reared mainly for the wool. They are mainly reared in areas with low rainfall. Reared sheep eat grass and leaves. They are also fed on a mixture of pulses, corn, jowar, oil cakes and minerals. In winters they are kept indoors and fed on dry fodder, leaves and grains.

ऊन कटाई का क्या अर्थ है?

ऊन कटाई: एक बार जब एक भेड़ बालों की एक मोती परत विकसित कर लेती है, तो इन बालों को ऊन प्राप्त करने के लिए काटा जाता है। भेड़ की त्वचा से ऊन को अलग करना ऊन की कटाई कहलाता है। यह कार्य कई मशीनों द्वारा पूरा समान किया जाता है।

What is meant by the term Sericulture?

Sericulture: The breeding and management of silk worms for the production of silk is known as sericulture. Different types of silk (e.g. mulberry silk, Tassar silk etc.) with different textures are obtained from different varieties of silk moths.

Which of the following does not yield wool? (i) Yak (ii) Camel (iii) Goat (iv) Woolly dog

(iv) Woolly dog

शेष चरणों को उनके सही क्रम में लिखिए। ऊन कटाई, _______________, छँटाई, _________________, ___________________, ______________ ।

ऊन कटाई, अभिमार्जन, छँटाई, बर की छँटाई, रंगाई, रीलिंग।

पालन का क्या अर्थ है?

पालन: पालन का अर्थ पशुधन (जैसे गाय, भैंस, बकरी आदि) को पैसा कमाने के लिए रखना और उसकी देखभाल करना। इन जानवरों को खिलाया जाता है, आश्रय प्रदान किया जाता है और बेहतर उपज जैसे दूध, मांस, ऊन आदि के लिए पाला जाता है। उदाहरण के लिए, भेड़ को मुख्य रूप से ऊन के लिए पाला जाता है। वे मुख्य रूप से कम वर्षा वाले क्षेत्रों में पाले जाते हैं। भेड़ें घास और पत्तियाँ खाती हैं। उन्हें दालों, मक्का, ज्वार और खनिजों के मिश्रण भी खिलाया जाता है। सर्दियों में उन्हें घर के अंदर रखा जाता है और सूखे चारे, पत्तियों और अनाजों पर पाला जाता है।

The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option. (i) a (ii) b (iii) both a and b (iv) neither a nor b.

(iii) both a and b

Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them. Shearing, __________, sorting, __________, __________, _________.

Shearing, scouring, sorting, fibre spinning, fibre drying, rolling in silk yarn.

निम्नलिखित में से कौन-से दो शब्द रेशम उत्पादन से संबंधित हैं? रेशम कीट पालन, पुष्प कृषि, शहतूत कृषि, मधुमक्षि पालन, वनवर्धन।

रेशम कीट पालन और शहतूत कृषि।