Class 7 Fibre To Fabric CBSE Questions & Answers

Class 7 · Fibre To Fabric

This is Science Class 7 Fibre to Fabric CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Sericulture is old occupation in
  • A
    China and Myanmar
  • B
    India and china
    Correct
  • C
    Pakistan and Japan
  • D
    India and Japan
2
For obtaining silk
  • A
    Cocoon are collected and boiled
  • B
    Moths are reared and caterpillar is collected
  • C
    Moths are reared and cocoons are collected
    Correct
  • D
    Cocoons are collected and sold
3
Silkworms feed on leaves of
  • A
    Banana
  • B
    Mango
  • C
    Mulberry
    Correct
  • D
    Guava
4
Wool fibres are combed, rolled and straightened into
  • A
    Fibres bundle
  • B
    Woollen roll
  • C
    Thread
  • D
    Yarn
    Correct
5
Fleece of sheep contain grease and dust, it is removed by
  • A
    Spinning
  • B
    Yarning
  • C
    Scouring
    Correct
  • D
    Searing
6
Chemical constituent of cotton is
  • A
    Lactose
  • B
    Pectin
  • C
    Glucose
  • D
    Cellulose
    Correct
7
Silk fibre is made up of protein but woollen fibres are made up of
  • A
    Fatty acids
  • B
    Proteins
    Correct
  • C
    All of these
  • D
    Cellulose
8
Sorter disease is a
  • A
    Skin disease
  • B
    Muscular disease
  • C
    Fatal blood disease
    Correct
  • D
    Respiratory disease
9
Carding machine is used to
  • A
    Yarn into shawls
  • B
    Fibre into yarn
  • C
    Wool into sweater
  • D
    Comb loose wool into sheet
    Correct
10
Early man wears
  • A
    Unstitched clothes
  • B
    Clothes made by hands
  • C
    Tree barks, leaves and animals skin
    Correct
  • D
    Clothes manufactured in mills
11
Selective breeding of sheep is done to obtain
  • A
    Soft under hair producing sheep
    Correct
  • B
    Long hair sheep
  • C
    Both soft under and coarse hair sheep
  • D
    Coarse under hair producing sheep
12
What is difference between wool and beard of sheep?
  • A
    Beard is coarse fibre in fleece
    Correct
  • B
    Wool is coarse fibre in fleece
  • C
    Beard is long and wool is shorter
  • D
    Both of them are of same quality
13
The favourable climatic condition for sheep is
  • A
    Rainy season
  • B
    Cold and dry
    Correct
  • C
    Both hot and rainy season
  • D
    Hot and dry
14
Air is poor conductor of heat that is used to
  • A
    Keep body cool by cotton clothes
  • B
    Used to make air tight container
  • C
    Keep body warm by woollen clothes
    Correct
  • D
    Used in air conditioner
15
Wool commonly available in market is
  • A
    Sheep wool
    Correct
  • B
    Goat wool
  • C
    Camel wool
  • D
    Yak wool