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Science Test - 4
Read Instructions for the test.
Negative marks are -0.33 per wrong answer
Right answer is 1 mark
No time limit but finish in 30 mins
Solution can be found at below chapters:
Test series is based on following chapters.
Science Chapter 5: Fabrics
Science Chapter 6: Elements
Q1:Natural fibers are
Cotton
Jute, silk
wool
All
Q2:Cotton is a polymer of
cellulose
glucose
fructose
lactose
Q3: Wool of Kashmiri goats is of type
angora
pashmina
both
none
Q4: Rearing of silkworms to obtain silk is
pisciculture
sericulture
aviculture
apiculture
Q5: Jute is obtained from which part of the plant
stem
root
shoot
flowers
Q6: Flax is
natural fiber
polymer of coal
obtained from petrochemicals
fire resistant
Q7:Which property is applicable to artificial fibers
are made from petrochemicals
catch fire easily
both
none
Q8: Artificial silk is also called
nylon
rayon
terelyne
none
Q9: First fully synthetic fiber is
rayon
nylon
terelyne
benzene
Q10: A string of this fiber is stronger than string of steel so it’s used in making parachutes and ropes.
terelyne
nylon
acrylic
rayon
Q11: Polyester used for making bottles, utensils, wires etc is
PET
terelyne
nylon
rayon
Q12:Plastics that bend on heating and are called
thermoplastics
thermosetting
both
none
Q13: this plastic is used in non stick cookware.
teflon
bakelite
melamine
none
Q14: This plastic is used on coat of firemen so it makes them flame resistant.
teflon
nylon
bakelite
melamine
Q15:Which is true
thermoplastics are [PVC, Polythene].
thermosetting plastics are [Bakelite, melamine]
both
none
Q16:Scientific name of rubber is
butamine
isoneoprene
cis 1, 4 isoprene.
saccarin
Q17: Since natural rubber is brittle at low temperatures and soft at high temperatures it is treated in a process called
dehydration
chromatography
dispersion
vulcanisation
Q18: This is a blood disease common among wool sorters.
anthrax
itai itai
mina mata
spondilytis
Q19:Match the sheep breeds
Lohi – Raj, Punjab
Rampur bushair – UP, HP
Nali- Raj, Punjab, Haryana
all
Q20: Hardest carbon allotrope is
graphite
graphene
fullerene
diamond
Q21: Metals which can be cut by knife
lithium
sodium
potassium
All
Q22: Graphite is used for
conductor of electricity
lubricant in machines where oil can’t be used due to high temperature
both
none
Q23:Sodium is very reactive with oxygen and hence stored in
Sodium benzoate
sodium metabisulphide
water
kerosene
Q24: CO2 is a good fire extinguisher because
it cuts off oxygen supply to fire by making a protective blanket as it’s heavier than O2.
it is flame resistant
it is lighter than oxygen
none
Q25:The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its
calorific value
heat content
potential energy
kinetic energy
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