CBSE Class 7 Science Fibre to Fabric MCQs

Question. Which of the following does not yield wool? ( )
a. Yak
b. Camel
c. Goat
d. Woolly dog

Answer: D

Question. Which type of wool is common in Tibet and Ladhak? ( )
a. Yak
b. sheep wool 
c. Angora wool  
d. Pashmina wool

Answer: D

Question. ______________type of wool is commonly available in the market( ) 
a. Sheep wool
b. Yak wool
c. Angora wool
d. Camel wool

Answer: A

Question. Pashmina shawls are found in ( )
a. South America
b. Kashmir
c. South Africa
d. Gujarat

Answer: B

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 

Answer: B

Question. The bacterium by which the people working in wool industry getinfected is ( )
a. Rhizobium
b. Anthrax 
c. Streptococcus
d. Bacillus

Answer: B

Question. The rearing of silkworms to obtain silk is called ( )
a. Sericulture
b. Horticulture
c. Agriculture
d. Aqua-culture 

Answer: A

Question. Food of the caterpillar in case of silk moth is ( )
a. Mulberry leaves 
b. Neem leaves
c. Tulsi Leaves
d. Pudina leaves 

Answer: A

Question. Silk fibre obtained from silk moth is_________ ( )
a. Carbohydrate
b. Fat
c. Protein
d. Sugars

Answer: C

Question. Find from the following where Silk Industry began ( )
a. India
b. China 
c. Tibet
d. Africa

Answer: B

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

Answer: C

Question. Woollen clothes are made from ( )
a. Animals 
b. Plants
c. Insects
d. Bacteria

Answer: A

Question. The process of taking out threads from the cocoon for use as silk is called:
(a) reeling the silk
(b) reeling silk worms
(c) both of them
(d) none of these

Answer:  A

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

Answer:  A

Question. Which type of wool is common in Ladakh and Tibet?
(a) Yak wool
(b) Sheep wool
(c) Angora wool
(d) Pashmina wool

Answer:  A

Question. What is the scientific name of mulberry tree?
(a) Magnifera indica
(b) Morus alba
(c) Desmodium girence
(d) None of these

Answer:  B

Question. Silk industry began in:
(a) China
(b) India
(c) Japan
(d) Korea

Answer:  A

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

Answer:  B

Question. Removal of wool from a sheep is known as
(a) rearing
(b) shearing
(c) sorting
(d) scouring

Answer:  B

Question. Which of the following is not a type of silk?
(a) Mulberry silk
(b) Tassar silk
(c) Mooga silk
(d) Moth silk

Answer:  D

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

Answer:  A

Question. Silk worms are made of:
(a) protein
(b) vitamins
(c) minerals
(d) all of these

Answer:  A

Question. The bringing up and looking after the sheep is called:
(a) rearing
(b) shearing
(c) scouring
(d) all of these

Answer:  A

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

Answer:  B

Question. The caterpillars of silkworms feed on
(a) peepal leaves
(b) grass
(c) rose leaves
(d) mulberry leaves

Answer:  D

Question. Silk is obtained from
(a) Llama
(b) yak
(c) sheep
(d) cocoon

Answer:  D

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

Answer:  B

Question. Which bacterium causes a fatal blood disease ?
(a) Rhizobium
(b) Anthrax
(c) Both rhizobium and anthox
(d) None of these

Answer:  A

Question. Wool and silk fibres are obtained from:
(a) plants
(b) animals
(c) plants and animals
(d) all of these

Answer:  A

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

Answer:  D

Question. Which of the following wool-yielding animal is suitable for making Pashmina shawls?
(a) Kashmiri goat
(b) Angora goat
(c) Llama
(d) Alpaca

Answer:  A

Question. Which part of the black sheep have wool ?
(a) Legs
(b) Face
(c) Abdomen and back
(d) All of these

Answer:  A

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

Answer:  C

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

Answer: B

Question. Neoprene is a polymer of
(A) chloroprene
(B) chloroquin
(C) propylene
(D) isoprene

Answer: A

Question. The monomer unit of PVC is:
(A) vinyl chloride
(B) ethylene
(C) chloroprene
(D) acrylonitrile

Answer: A

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

Answer: A

Question. Which of the following is not an example of addition polymer?
(A) Polystyrene
(B) Polyethylene
(C) Polypropylene
(D) Terylene

Answer: D

Question. Buna-S is obtained by the polymerisation of butadiene and
(A) chloroprene
(B) styrene
(C) acrylonitrile
(D) adipic acid

Answer: B

Question. F₂C = CF₂is a monomer of
(A) glyptal
(B) teflon
(C) orlon
(D) buna-S

Answer: B

Question. Natural rubber is
(A) neoprene
(B) trans-polyisoprene
(C) cis-polyisoprene
(D) butyl rubber

Answer: C

Question. Terylene is a polymer of ethylene glycol and
(A) phthalic acid
(B) terephthalic acid
(C) adipic acid
(D) 1,6-hexadiamine

Answer: B

Question. Which of the following is not a step growth polymer?
(A) Polybutadine
(B) Nylon-6,6
(C) Glyptal
(D) Terylene

Answer: A

Question. Peptide bond is present in
(A) carbohydrates
(B) nucleic acids
(C)a-amino acids
(D) proteins

Answer: D

Question. Which of the following fibres are made of polyamides?
(A) Dacron
(B) Orlon
(C) Nylon-6, 6
(D) Rayon

Answer: C

Question. Nylon-6, 6 is made from
(A) 1,3-butadiene
(B) chloroprene
(C) adipic acid
(D) caprolactam

Answer: D

Question. Self drinks and baby feeding bottles are generally made up of
(A) Polyester
(B) Polyurethane
(C) Polyurea
(D) Polyamide

Answer: A

Question. Teflon is a polymer of
(A) tetrafluoroethylene
(B) tetraiodoethylene
(C) tetrabromoethylene
(D) tetrachloroethylene.

Answer: A

Question. Which of the following is used in paints?
(A)Terylene
(B) Nylon
(C) Glyptal
(D) Chloroprene

Answer: C

Question. Which of the following is a biodegradable polymer?
(A) Cellulose
(B) Polystyrene
(C) Polyvinylchloride
(D) Nylon-6, 6

Answer: A