MCQ Questions for Class 7 Science: Ch 3 Fibre to Fabric

MCQ Questions for Class 7 Science: Ch 3 Fibre to Fabric

1. Woollen fibres are obtained from which of the following things?
(a) Wool worms.
(b) Carbon compounds.
(c) Fleece of sheep.
(d) Cotton plants.
► (c) Fleece of sheep.

2. Scientific name of mulberry silk moth is
(a) Bombyx biti
(b) Bombyx lurra
(c) Bombyx mori
(d) Bombyx silki
► (c) Bombyx mori

3. Which of the following materials is/are used for clothing in ancient times?
(a) Animal skins     
(b) Leaves
(c) Vines                   
(d) All of these
► (d) All of these

4. A Which of the following deals with the rearing of silk worm?
(a) Silviculture
(b) Sericulture
(c) Apiculture
(d) Horticulture
► (b) Sericulture

5. Silk thread is obtained from
(a) Cocoon
(b) Caterpillar
(c) Pupa
(d) Adult moth
► (a) Cocoon

6. Angora goats are found in
(a) Delhi and U.P
(b) Jammu and Kashmir
(c) Punjab and Goa
(d) Arunachal Pradesh and Karnataka
► (b) Jammu and Kashmir

7. In which of the following processes new offspring with special characters is produced by selecting parents?
(a) Translation
(b) Selective breeding
(c) Separating
(d) Rearing
► (b) Selective breeding

8. Which is not a synthetic fibre?
(a) Rayon
(b) Polyester
(c) Hemp
(d) Nylon
► (c) Hemp

9. The machine that comb loose wool in sheet is called
(a) Moulding machine
(b) Looming machine
(c) Carding machine
(d) Ginning machine
► (c) Carding machine

10. Science of rearing silk is called
(a) Tissue culture
(b) Sericulture
(c) Agriculture
(d) Apiculture
► (b) Sericulture

11. Silkworms feed on leaves of
(a) Guava
(b) Mulberry
(c) Banana
(d) Mango
► (b) Mulberry

12. Which one of the following is not an example of natural fibre?
(a) Rayon
(b) Cotton
(c) Wood
(d) Silk
► (a) Rayon

13. Clothes do not protect us against
(a) Cold
(b) Rain
(c) Heat
(d) Disease
► (d) Disease

14. In South America wool is obtained from which of the following animals?
(a) Goat and Sheep
(b) Angora Goat
(c) Llama and Alpaca
(d) Yak and Sheep
► (c) Llama and Alpaca

15. Which word complete the given correlation?
Silk: Cocoon, Wool: ____
(a) Hair of rabbit
(b) Cotton plant
(c) Fleece of sheep
(d) Jute of hemp
► (c) Fleece of sheep

16. Best quality of wool is obtained from
(a) Merino sheep
(b) Goat
(c) Paschimini sheep
(d) Kashmiri sheep
► (a) Merino sheep

17. Soft under fur of Kashmiri goat is used to woven shawls called
(a) Kashmiri shawls
(b) Oswald shawls
(c) Pashmina shawls
(d) Bombay shawls
► (c) Pashmina shawls

18. Early man wears
(a) Clothes manufactured in mills
(b) Unstitched clothes
(c) Clothes made by hands
(d) Tree barks, leaves and animals skin
► (d) Tree barks, leaves and animals skin

19. Chemical constituent of cotton is
(a) Cellulose
(b) Pectin
(c) Lactose
(d) Glucose
► (a) Cellulose

20. Woollen clothes are preferred to be worn on which of the following days?
(a) Hot day              
(b) Rainy day           
(c) Cold day             
(d) Sunny day
► (c) Cold day             

21. Which one is a type of synthetic fibre?
(a) Nylon
(b) Silk
(c) Cotton
(d) Jute
► (a) Nylon

22. The industry related to fabric and clothing is called
(a) Fabric industry
(b) Agro industry
(c) Textile industry
(d) Petrochemical industry
► (c) Textile industry

23. Silk is a natural __________ fibre.
(a) Fatty acids
(b) Mixed
(c) Cellulose
(d) Protein
► (d) Protein

24. Weavers weaves the silk thread into
(a) Silk yarn
(b) Silk fleece
(c) Silk cloth
(d) Silk cotton
► (c) Silk cloth
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