Class 7 Science MCQ Fibre to Fabric

Question : Silk fibres are also known as:

(a) animal fibres
(b) plant fibres
(c) animal and plant fibres
(d) none of these

Question : The rearing of silkworms for obtaining silk is called:

(a) moriculture
(b) apiculture
(c) sericulture
(d) silviculture

Question : Which bacterium causes a fatal blood disease ?

(a) Rhizobium
(b) Anthrax
(c) Both rhizobium and anthox
(d) None of these

Question : Pashmina shawls are found in __________________________.

(a) South America
(b) Kashmir
(c) South Africa
(d) Gujarat

Question : The process of removing the fleece of sheep along with a thin Layer of skin is called

(a) Rearing
(b) Shearing
(c) Sorting
(d) Scouring

Question : The bacterium by which the people working in wool industry getinfected is __________________________.

(a) Rhizobium
b. Anthrax
c. Streptococcus
(d) Bacillus

Question : The rearing of silkworms to obtain silk is called __________________________.

(a) Sericulture
(b) Horticulture
(c) Agriculture
(d) Aqua-culture

Question : Food of the caterpillar in case of silk moth is __________________________.

(a) Mulberry leaves
(b) Neem leaves
(c) Tulsi Leaves
(d) Pudina leaves

Question : Silk fibre obtained from silk moth is_________ __________________________.

(a) Carbohydrate
(b) Fat
(c) Protein
(d) Sugars

Question : Which of the following does not yield wool? __________________________.

(a) Yak
(b) Camel
(c) Goat
(d) Woolly dog

Question : Which type of wool is common in Tibet and Ladhak? __________________________.

(a) Yak
(b) sheep wool
(c) Angora wool
(d) Pashmina wool

Question : ______________type of wool is commonly available in the market__________________________.

(a) Sheep wool
(b) Yak wool
(c) Angora wool
(d) Camel wool

Question : Find from the following where Silk Industry began __________________________.

(a) India
(b) China
c. Tibet
(d) Africa

Question : For how long do the caterpillars eat mulberry leaves? __________________________.

(a) 10 to 15 days
(b) 20 to 30 days
(c) 25 to 30 days
(d) 5 to 10 days

Question : Which type of wool is common in Ladakh and Tibet?

(a) Yak wool
(b) Sheep wool
(c) Angora wool
(d) Pashmina wool

Question : What is the scientific name of mulberry tree?

(a) Magnifera indica
(b) Morus alba
(c) Desmodium girence
(d) None of these

Question : Silk industry began in:

(a) China
(b) India
(c) Japan
(d) Korea

Question : Which of the following fibres are made into wool for sweaters?

(a) Shorter fibres
(b) Longer fibres
(c) Both (a) and (b)
(d) None of these

Question : Removal of wool from a sheep is known as

(a) rearing
(b) shearing
(c) sorting
(d) scouring

Question : Which of the following is not a type of silk?

(a) Mulberry silk
(b) Tassar silk
(c) Mooga silk
(d) Moth silk

Question : Best quality of wool is obtained from

(a) Merino sheep
(b) Goat
(c) Paschimini sheep
(d) Kashmiri sheep

Question : Silk worms are made of:

(a) protein
(b) vitamins
(c) minerals
(d) all of these

Question : The bringing up and looking after the sheep is called:

(a) rearing
(b) shearing
(c) scouring
(d) all of these

Question : Silkworms feed on leaves of

(a) Guava
(b) Mulberry
(c) Banana
(d) Mango

Question : The caterpillars of silkworms feed on

(a) peepal leaves
(b) grass
(c) rose leaves
(d) mulberry leaves

Question : Silk is obtained from

(a) Llama
(b) yak
(c) sheep
(d) cocoon

Question : 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

Question : Which bacterium causes a fatal blood disease ?

(a) Rhizobium
(b) Anthrax
(c) Both rhizobium and anthox
(d) None of these

Question : Wool and silk fibres are obtained from:

(a) plants
(b) animals
(c) plants and animals
(d) all of these

Question : Which of the following materials is/are used for clothing in ancient times?

(a) Animal skins
(b) Leaves
(c) Vines
(d) All of these

Question : Which of the following wool-yielding animal is suitable for making Pashmina shawls?

(a) Kashmiri goat
(b) Angora goat
(c) Llama
(d) Alpaca

Question : Which part of the black sheep have wool ?

(a) Legs
(b) Face
(c) Abdomen and back
(d) All of these

Question : Woollen fibres are obtained from which of the following things?

(a) Wool worms.
(b) Carbon compounds.
(c) Fleece of sheep.
(d) Cotton plants.

Question : Which of the following is naturally occurring polymer?
(A Polythene
(B) Starch
(C) Nylon
(D) Teflon

Question : Neoprene is a polymer of

(a) chloroprene
(B) chloroquin
(C) propylene
(D) isoprene

Question : Buna-S is obtained by the polymerisation of butadiene and

(a) chloroprene
(B) styrene
(C) acrylonitrile
(D) adipic acid

Question : F₂C = CF₂is a monomer of

(a) glyptal
(B) teflon
(C) orlon
(D) buna-S

Question : Silk industry began in:

(a) China
(b) India
(c) Japan
(d) Korea

Question : A Which of the following deals with the rearing of silk worm?

(a) Silviculture
(b) Sericulture
(c) Apiculture
(d) Horticulture

Question : Selective breeding is a process of

(a) selecting the offspring with desired properties.
(b) selecting the parents with desired properties.
(c) selecting an area for breeding.
(d) selecting fine hair for good quality wool.

Question : Weavers weaves the silk thread into

(a) Silk yarn
(b) Silk fleece
(c) Silk cloth
(d) Silk cotton

Question : Natural rubber is

(a) neoprene
(B) trans-polyisoprene
(C) cis-polyisoprene
(D) butyl rubber

Question : The monomer unit of PVC is:

(a) vinyl chloride
(B) ethylene
(C) chloroprene
(D) acrylonitrile

Question : Nylon-66 is obtained from

(a) hexamethylene diamine and adipic acid
(B) phenol and formaldehyde
(C) propylene and adipic acid
(D) adipic acid and phthalic acid

Question : Which of the following is not an example of addition polymer?

(a) Polystyrene
(B) Polyethylene
(C) Polypropylene
(D) Terylene

Question : Terylene is a polymer of ethylene glycol and

(a) phthalic acid
(B) terephthalic acid
(C) adipic acid
(D) 1,6-hexadiamine

Question : Which of the following is not a step growth polymer?

(a) Polybutadine
(B) Nylon-6,6
(C) Glyptal
(D) Terylene

Question : Best quality of wool is obtained from

(a) Merino sheep
(b) Goat
(c) Paschimini sheep
(d) Kashmiri sheep

Question : Which bacterium causes a fatal blood disease ?

(a) Rhizobium
(b) Anthrax
(c) Both rhizobium and anthox
(d) None of these

Question : Silk is obtained from silk worm which lives on

(a) mango leaves
(b) banana leaves
(c) mulberry leaves
(d) maple leaves

Question : Peptide bond is present in

(a) carbohydrates
(B) nucleic acids
(C)a-amino acids
(D) proteins

Question : Which of the following fibres are made of polyamides?

(a) Dacron
(B) Orlon
(C) Nylon-6, 6
(D) Rayon

Question : Nylon-6, 6 is made from

(a) 1,3-butadiene
(B) chloroprene
(C) adipic acid
(D) caprolactam

Question : Mostly sheep are reared for getting wool in:

(a) China
(b) India
(c) Japan
(d) Europe

Question : Silk worms are made of:

(a) protein
(b) vitamins
(c) minerals
(d) all of these

Question : Self drinks and baby feeding bottles are generally made up of

(a) Polyester
(B) Polyurethane
(C) Polyurea
(D) Polyamide