हिंदी
तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

______ is a non-biodegradable material.

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प्रश्न

______ is a non-biodegradable material.

विकल्प

  • Paper

  • A plastic bottle

  • Cotton cloth

  • Wool

MCQ
रिक्त स्थान भरें
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उत्तर

A plastic bottle is a non-biodegradable material.

shaalaa.com
Animal Fibres: Wool
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Polymer Chemistry - Evaluation [पृष्ठ ६२]

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सामाचीर कलवी Science - Term 3 [English] Class 7 TN Board
अध्याय 3 Polymer Chemistry
Evaluation | Q I. 6. | पृष्ठ ६२

संबंधित प्रश्न

You must be familiar with the given nursery rhymes

Baa baa black sheep, have you any wool.

Answer the following:

Which parts of the black sheep have wool?


Which of the following does not yield wool?


What is meant by term Shearing ?


What is meant by term Sericulture?


Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them

Shearing, __________, sorting, ______________________________


Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words.

Down

(D) 1: Thorough washing

2 : Animal fibre

3 : Long thread like structure

Across

(A) 1 : Keeps warm

2 : Its leaves are eaten by silkworms

3 : Hatches from egg of moth


True or False – If False give the correct answer

Ahimsa silk is otherwise known as Mulberry silk.


What are the characteristics of wool? Give any three.


What are the major steps involved in this wool factory.


Assertion: Wool is the fibre derived from the fur of animals.

Reason: Animals like goat, Yak, Alpaca and rabbit yields wool.


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?


Wool yielding animals bear ______ on their body.


How do the hair of certain animals help in keeping their bodies warm?


Figure shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.


On burning wool, why we get the small of burning of hair?


The scouting process during the processing of wool refers to ______.


The process called ______ involves the removal of dried wool.


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