Mercury
Lithium
Lead
Silver
B. Lithium
amylase
lipase
carboxypeptidase
carbonic anhydrase
Earthquakes
Magnetic reversals
Hurricanses
Increased deposition of deep-sea sediments
permeable
semipermeable
selectively permeable
impermeable
Zinc
Iron
Copper
Lead
0°C
-4°C
100°C
4°C
Sulphonates
Zeolites
Nitrates
None of these
S
Ga
Se
I
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
evaporation
condensation
sublimation
deposition
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
1H1
1H2
6C12
8O16
Conversion of nitrogen to nitric acid.
Production of nitrogen from air
Convert the atmospheric nitrogen to effective nitrogen compound.
Liquifaction of nitrogen
Methane, Butane and Propane
Methane, Ethane and Hexane
Ethane, Hexane and Nonane
Methane, Hexane and Nonane
Calamine
Calcite
Galena
Bauxite
Increases
Remains unaltered
Drops sharply
Decreases
core
photosphere
sunspots
corona
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 warfare
Depletion of earth's ozone layer
CO2 from fossil fuels
Dust clouds from valcanoes
Carbon
Hydrogen
Aluminium
Silicon
Uranium
Plutonium
Thorium
Zirconium
Sodium
Cerium
Francium
Lithium
Pyrex glass
Soft glass
Flint glass
Jena glass
Atomic number
Atomic mass
Quantum numbers
None of these
styrene
methane
ethylene
acetylene
Cat
Bear
Rabbit
Dog
Pulley
Microscope
Thermemoter
Barometer
None of these
Ultraviolet rays
Infra Red rays
Cosmic Rays
Argon
Vanadium
Iodine
Sulphur
An atom
A cation
A molecule
An anion
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