The artificial silk produced from cellulose is
Polyethylene
Nylon
Terylene
Rayon
Correct Answer :
D. Rayon
Related Questions
Two or more entirely different compounds having the same molecular formula are known as
isobars
isotopes
isomorphs
isomers
Refined petroleum is decolourised by
manganese dioxide
bauxite
animal charcoal
quicklime
A mixture of ethyl alcohol and water can be separated by
evaporation
sublimation
using a separating funnel
fractional distillation
Graphite la a good conductor of electricity because
it is an allotrope of carbon
it gives CO2 on heating
it contains free electrons
it is oxidised to graphitic acid
Dry Ice is
solid carbon dioxide
liquid oxygen
liquid hydrogen
liquid. Chlorine
The compound or nitrogen used in dry cells is
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
Concrete is a mixture of
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
Which one of the following gases is extremely soluble in water?
Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide
The freezing point of water at 760 mm pressure is
273 K
0 K
273°C
-273°C
The fertilizer which has the largest percentage of nitrogen is
urea
ammonium nitrate
ammonium sulphate
calcium cyanamide
The poisonous nature of carbon monoxide is due to
cutting off supply of oxygen
it™s being converted into carbon dioxide
its combination with haemoglobin of blood
its blocking of vocal chords
Artificial diamonds were produced by
Moissan
Davy
Faraday
Marie Curie
The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
annealing
hardening
quenching
tempering
Which one of the following is used for dry cleaning?
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
Annealing of glass is done in
a cupel
a long narrow chamber
an open furnace
a closed furnace
The Combined Gas Law equation is
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
A common rodenticide is (Rat Poison)
malathion
parathion
zinc phosphide
diuron
The gas used in balloons in the place of hydrogen is
nitrogen
helium
neon
argon
Mortar contains cement and sand in the ratio of
1 : 1
1 : 2
2 : 3
1 : 3
A metal which is extracted by thermal reduction is
nickel
aluminium
mercury
calcium
Which of the following biology laboratory?
Phenol
Benzaldehyde
Formaldehyde
Acetic acid
The iron salt used in blue prints is
ferric sulphate
ferric oxalate
ferric nitrate
ferric chloride
The addition of a neutron to the nucleus of an atom
increases the atomic mass of the atom
decreases the atomic mass of the atom
increases the charge on the nucleus
decreases the charge on the nucleus
Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because otherwise
it becomes coloured
it gets evaporated in air
it gets oxidised to phosgene
it gets decomposed to chloropicrin
The pH or pure water is nearly 7.0 It will increase on the addition or
hydrochloric acid
ammonia
cane sugar
common salt
The kinetic energy of gas molecules
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
Which of the following is a halogen?
Radon
Astatine
Cesium
Ruthenium
Compounds containing only carbon and hydrogen are called
carbohydrates
carbides
hydrocarbons
carbonyls
In the making of jewels, gold is usually mixed with
zinc
tin
copper
aluminium
The alloy which is extremely hard and resistant to acids is
chrome steel
silicon steel
stainless steel
invar