The major ingredient of leather is
Nucleic acid
Carbohydrate
Collagen
Polymer
Correct Answer :
C. Collagen
Related Questions
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
Pollination by birds is called
autogamy
entomophily
anemophily
ornithophily
Which of the following is in liquid form at room temperature ?
Sodium
Cerium
Francium
Lithium
The removal of top soil by water or wind is called
Soil erosion
Soil wash
Silting of soil
Soil creep
The type of glass used in making prisms and lenses is
Pyrex glass
Soft glass
Flint glass
Jena glass
Which of the following parts of the sun is easily visible only during a total solar eclipse?
core
photosphere
sunspots
corona
The marine animal called dugong which is vulnerable to extinction is a/an
Amphibian
Shark
Bony fish
Mammal
The metal used in storage batteries
Zinc
Iron
Copper
Lead
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
The most important ore of Aluminium is
Calamine
Calcite
Galena
Bauxite
Which of the following is the lightest metal ?
Mercury
Lithium
Lead
Silver
Which of the following elements is non-radioactive?
Uranium
Plutonium
Thorium
Zirconium
Bromine is
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
Quartz crystals normally used in quartz clocks etc. is chemically
A mixture of B and C
Silicon dioxide
Germenium dioxide
Sodium Silicate
Polythene is industrially prepared by the polymerisation of
styrene
methane
ethylene
acetylene
Cell membrane is
permeable
semipermeable
selectively permeable
impermeable
Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
Sulphonates
Zeolites
Nitrates
None of these
Epoxy resins is used as
Adhesives
Detergents
Insecticides
Moth repellants
Nitrification means
Conversion of nitrogen to nitric acid.
Production of nitrogen from air
Convert the atmospheric nitrogen to effective nitrogen compound.
Liquifaction of nitrogen
The colour of Emerald is
Deep Green
Violet
Prussian Blue
Yellow
The fastest-running terrestrial animal is
lion
man
jaguar
cheetah
Which of the following characters is not shown by hydrogen
It burns in air to form water
It supports combustion
It readily combines with fluorine and chlorine
It combines with almost all metals forming hydrides
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
Which of the following elements is a metal
S
Ga
Se
I
The metallic constituents of hard water are
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
In an atomic nucleus, neutrons and protons are held together by
Magnetic forces
Gravitational forces
Coulombic forces
Exchange forces
When a gas is turned into a liquid, the process is called
evaporation
condensation
sublimation
deposition
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
Glass is made from the mixture of
Quartz and mica
Sand and salt
Sand and silicates
None of these