permeable
semipermeable
selectively permeable
impermeable
B. semipermeable
Nucleic acid
Carbohydrate
Collagen
Polymer
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
Adhesives
Detergents
Insecticides
Moth repellants
Coulomb
Hum
Cycles
Decible
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
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
It activate H2O molecule
Photo-electricity reaction starts
Some of the gas molecules become bigger
It cause combination of oxygen and nitrogen
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
Sulphonates
Zeolites
Nitrates
None of these
Nitric oxide
Nitrogen dioxide
Nitrogen pentoxide
Nitrous oxide
S
Ga
Se
I
Calamine
Calcite
Galena
Bauxite
Conversion of nitrogen to nitric acid.
Production of nitrogen from air
Convert the atmospheric nitrogen to effective nitrogen compound.
Liquifaction of nitrogen
autogamy
entomophily
anemophily
ornithophily
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
Orion
Terylene
Rayon
Nylon
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
Atomic number
Atomic mass
Quantum numbers
None of these
core
photosphere
sunspots
corona
Carbamide
Chloroetane
Aneurin
None of these
Granulocyte
Neuron
Reticulocyte
Nephron
Carbon dioxide
Hydrogen Sulphide
Oxygen
Nitrogen
permeable
semipermeable
selectively permeable
impermeable
an AND circuit
an OR circuit
a high-pass filter
a NOR circuit
Zinc
Iron
Copper
Lead
Cat
Bear
Rabbit
Dog
An atom
A cation
A molecule
An anion
lion
man
jaguar
cheetah
Soil erosion
Soil wash
Silting of soil
Soil creep
Pulley
Microscope
Thermemoter
Barometer