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
Sorter disease is a
  • A
    Respiratory disease
  • B
    Muscular disease
  • C
    Fatal blood disease
    Correct
  • D
    Skin disease
2
To separate silk from cocoon, it is
  • A
    Left undisturbed for some days
  • B
    Beaten with bamboo
  • C
    Boiled or steamed
    Correct
  • D
    Kept in cold water
3
Which one is not a variety of silk?
  • A
    Mooga silk
  • B
    Erri silk
  • C
    Bombay silk
    Correct
  • D
    Tassar silk
4
Correct order of wool processing is
  • A
    Shearing, sorting, scoring and dying
  • B
    Shearing, scouring, dying and sorting
  • C
    Shearing, scouring, sorting and dying
    Correct
  • D
    Sorting, dying, Shearing and scouring
5
Which kind of cloths can be used both summer and winter
  • A
    Woollen
  • B
    All of these
  • C
    Cotton
  • D
    Silk
    Correct
6
Why are cotton clothes more common than silk clothes?
  • A
    Cotton clothes can be used rough
  • B
    Cotton clothes are more durable
  • C
    Cotton clothes are more beautiful
  • D
    Cotton is less expensive than silk
    Correct
7
Wool commonly available in market is
  • A
    Goat wool
  • B
    Sheep wool
    Correct
  • C
    Yak wool
  • D
    Camel wool
8
Why is woollen yarn stronger than cotton yarn?
  • A
    Animal fibres are always stronger
  • B
    More fibres are twisted together to form woollen yarn
    Correct
  • C
    Woollen yarn is made up of protein but cotton yarn is made of cellulose.
  • D
    Woollen fibres are smaller then cotton yarn
9
Angora goats are found in
  • A
    Andhra Pradesh
  • B
    Jammu and Kashmir
    Correct
  • C
    Bengal
  • D
    Madhya Pradesh
10
What is difference between wool and beard of sheep?
  • A
    Beard is long and wool is shorter
  • B
    Wool is coarse fibre in fleece
  • C
    Beard is coarse fibre in fleece
    Correct
  • D
    Both of them are of same quality
11
Why silk does not detangle like wool?
  • A
    Silk is obtained directly as thread from cocoon
    Correct
  • B
    Wool is coarse
  • C
    Silk is smoother than wool
  • D
    Silk forms single thread
12
Sheep are reared by
  • A
    Farmers
  • B
    Blacksmith
  • C
    Milkman
  • D
    Shepherds
    Correct
13
Why Scoring is not done for cotton but it is done for wool?
  • A
    All of above
  • B
    Because fleece is body hair containing germ and grease
    Correct
  • C
    Because cotton in natural fibre but wool is semi-synthetic
  • D
    Because fleece is hard but cotton fibre is soft
14
Fibres obtained from animals are generally made up of
  • A
    Carbohydrates
  • B
    Vitamins
  • C
    Cellulose
  • D
    Protein threads
    Correct
15
Protein is made up of
  • A
    Glucose
  • B
    Amino acids
    Correct
  • C
    Lactose
  • D
    Fatty acids