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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

______ is a non-biodegradable material. - Science

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प्रश्न

______ is a non-biodegradable material.

पर्याय

  • Paper

  • A plastic bottle

  • Cotton cloth

  • Wool

MCQ
रिकाम्या जागा भरा
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उत्तर

A plastic bottle is a non-biodegradable material.

shaalaa.com
Animal Fibres: Wool
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Polymer Chemistry - Evaluation [पृष्ठ ६२]

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सामाचीर कलवी Science - Term 3 [English] Class 7 TN Board
पाठ 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?


You must be familiar with the following nursery rhymes:

Mary had a little lamb, whose fleece was white as snow

Answer the following:

What is meant by the white fleece of the lamb?


Which of the following does not yield wool?


What is meant by term Rearing?


What is meant by term Shearing ?


What is meant by term Sericulture?


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


What are the two types of fibres that are obtained from animals?


What is shearing?


Write the uses of the 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 fibre cannot be obtained from which of the following?


Wool yielding animals bear ______ on their body.


State whether the following statement is True or False. If false, correct them.

In India, camels and goats are generally reared for obtaining wool.


State whether the following statement is True or False. If false, correct them.

In the process of obtaining wool from fleece, sorting is done after scouring.


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.


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


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