Methane, Butane and Propane
Methane, Ethane and Hexane
Ethane, Hexane and Nonane
Methane, Hexane and Nonane
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
Soil erosion
Soil wash
Silting of soil
Soil creep
Earthquakes
Magnetic reversals
Hurricanses
Increased deposition of deep-sea sediments
It activate H2O molecule
Photo-electricity reaction starts
Some of the gas molecules become bigger
It cause combination of oxygen and nitrogen
Desiccation
Efflorescence
Deliquescene
Osmosis
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 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
styrene
methane
ethylene
acetylene
Argon
Vanadium
Iodine
Sulphur
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
Adhesives
Detergents
Insecticides
Moth repellants
Nucleic acid
Carbohydrate
Collagen
Polymer
amylase
lipase
carboxypeptidase
carbonic anhydrase
A mixture of B and C
Silicon dioxide
Germenium dioxide
Sodium Silicate
permeable
semipermeable
selectively permeable
impermeable
Carbon
Hydrogen
Aluminium
Silicon
Carbamide
Chloroetane
Aneurin
None of these
Zinc
Iron
Copper
Lead
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
Silver
Magnesium
Platinium
Mercury
Calamine
Calcite
Galena
Bauxite
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
Cat
Bear
Rabbit
Dog
Atomic number
Atomic mass
Quantum numbers
None of these
Atomic warfare
Depletion of earth's ozone layer
CO2 from fossil fuels
Dust clouds from valcanoes
Platinum
Quartz
gold
Diamond
Magnetic forces
Gravitational forces
Coulombic forces
Exchange forces
Carbon dioxide
Hydrogen Sulphide
Oxygen
Nitrogen
Mercury
Lithium
Lead
Silver