Polythene is industrially prepared by the polymerisation of
styrene
methane
ethylene
acetylene
Correct Answer :
C. ethylene
Related Questions
The element present in the largest amount in rocks and minerals is
Carbon
Hydrogen
Aluminium
Silicon
Which of the following is commonly called a polyamide ?
Orion
Terylene
Rayon
Nylon
Rust is
A mixture of FeO and Fe(OH)2
A mixture of Fe2O3 and Fe(OH)2
A mixture of Fe2O3, 3H2O and FeO
FeO only
Which of the following is in liquid form at room temperature ?
Sodium
Cerium
Francium
Lithium
Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called
Carbon Monoxide
Phosgene
Phosphine
None of these
Old-written material, which cannot be read easily can be read by
None of these
Ultraviolet rays
Infra Red rays
Cosmic Rays
Cell membrane is
permeable
semipermeable
selectively permeable
impermeable
The fastest-running terrestrial animal is
lion
man
jaguar
cheetah
Bromine is
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
Nitrification means
Conversion of nitrogen to nitric acid.
Production of nitrogen from air
Convert the atmospheric nitrogen to effective nitrogen compound.
Liquifaction of nitrogen
Which of the following elements is obtained from sea weeds ?
Argon
Vanadium
Iodine
Sulphur
Pollination by birds is called
autogamy
entomophily
anemophily
ornithophily
The intencity of Earthquakes is measured on
Beaufort scale
Secant scale
Mercalli scale
Richter scale
The solar eclipse occurs when
the sun comes in between the moon and the earth
the moon comes in between the sun and the earth
the earth comes in the between the sun and the moon
None of the above
Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
A piece of iron that is not a permanent magnet
The north pole of another permanent magnet
A positively charged glass rod
A negatively charged rubber rod
Glass is made from the mixture of
Quartz and mica
Sand and salt
Sand and silicates
None of these
Earth's seasons are caused by which of the following?
The varying amount of sunspot activity
The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun
The earth's orbit around the sun as an exlipse rather than a circle
The rotation of during a 24-hour day
In an atomic nucleus, neutrons and protons are held together by
Magnetic forces
Gravitational forces
Coulombic forces
Exchange forces
Permanent hardness of water can be removed by adding
Potassium Permanganate
Bleaching Powder
Chlorine
Washing Soda
The hardest substance available on earth is
Platinum
Quartz
gold
Diamond
The formula of Plaster of Paris is
2CaSO4, H2O
CaSO4
CaSO4, 2H2O
2CaSO4, 4H2O
The smallest functional and structural unit of kidney is called as
Granulocyte
Neuron
Reticulocyte
Nephron
The oxide of Nitrogen used in medicine as anaesthetic is
Nitric oxide
Nitrogen dioxide
Nitrogen pentoxide
Nitrous oxide
When a gas is turned into a liquid, the process is called
evaporation
condensation
sublimation
deposition
Epoxy resins is used as
Adhesives
Detergents
Insecticides
Moth repellants
In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is
an AND circuit
an OR circuit
a high-pass filter
a NOR circuit
The speed of light with the rise in the temperature of the medium
Increases
Remains unaltered
Drops sharply
Decreases
The metal that is present in Photo Films is
Silver
Magnesium
Platinium
Mercury
Which of the following is the lightest metal ?
Mercury
Lithium
Lead
Silver
The major ingredient of leather is
Nucleic acid
Carbohydrate
Collagen
Polymer