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Olympiad Test: Fibres To Fabrics -1


15 Questions MCQ Test Science Olympiad Class 7 | Olympiad Test: Fibres To Fabrics -1


Description
This mock test of Olympiad Test: Fibres To Fabrics -1 for Class 7 helps you for every Class 7 entrance exam. This contains 15 Multiple Choice Questions for Class 7 Olympiad Test: Fibres To Fabrics -1 (mcq) to study with solutions a complete question bank. The solved questions answers in this Olympiad Test: Fibres To Fabrics -1 quiz give you a good mix of easy questions and tough questions. Class 7 students definitely take this Olympiad Test: Fibres To Fabrics -1 exercise for a better result in the exam. You can find other Olympiad Test: Fibres To Fabrics -1 extra questions, long questions & short questions for Class 7 on EduRev as well by searching above.
QUESTION: 1

An expensive and rare fibre called Cashmere is obtained from

Solution:
QUESTION: 2

The small fluffy fibres are

Solution:
QUESTION: 3

Silk moth feed on

Solution:

Silk moths feed only on mulberry leaves, hence these silk moths are also called as mulberry silk moths.

QUESTION: 4

Which of these is a synthetic fibre?
Solution:
QUESTION: 5

The life cycle of silkworm is
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QUESTION: 6

Suitable temperature for eggs of silkworm to hatch is:
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QUESTION: 7

Which of the following is the function of hair in animals?
Solution:

Hair trap a lot of air and it keeps animal warm. 

QUESTION: 8

Removal of fleece of sheep with skin is
Solution:
QUESTION: 9

______ and ______ yield wool found in South America.
Solution:
QUESTION: 10

Rearing of silk worm is
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QUESTION: 11

______ wool is common in Ladhak and Tibet.
Solution:
QUESTION: 12

Silk clothes are prepared from
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QUESTION: 13

Which of the following has a great tensile strength?      
Solution:

Spider silk is famous for its amazing toughness, and until recently a tensile strength of 1.3 gigapascals (GPa) was enough to earn it the title of strongest natural material.

QUESTION: 14

Which of the following is present in silk fibre?
Solution:
QUESTION: 15

 Which of the following comes in the empty box in the given steps of processing fibres into wool Shearing → ?  → Sorting
Solution:

Scouring is done after shearing the skin with fur. In scouring, the skin with fur is washed thoroughly in tanks to remove grease, dust and dirt. 

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