Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?
Atomic warfare
Depletion of earth's ozone layer
CO2 from fossil fuels
Dust clouds from valcanoes
Correct Answer :
C. CO2 from fossil fuels
Related Questions
The metallic constituents of hard water are
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
Which of the following is commonly called a polyamide ?
Orion
Terylene
Rayon
Nylon
Which of the following elements is non-radioactive?
Uranium
Plutonium
Thorium
Zirconium
One fathom is equal to
6 feet
6 metres
60 cms
60 feet
Lightening cause rainfall because
It activate H2O molecule
Photo-electricity reaction starts
Some of the gas molecules become bigger
It cause combination of oxygen and nitrogen
Quartz crystals normally used in quartz clocks etc. is chemically
A mixture of B and C
Silicon dioxide
Germenium dioxide
Sodium Silicate
The intencity of Earthquakes is measured on
Beaufort scale
Secant scale
Mercalli scale
Richter scale
The property of a substance to absorb moisture from the air on exposure is called
Desiccation
Efflorescence
Deliquescene
Osmosis
Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
Sulphonates
Zeolites
Nitrates
None of these
The oxide of Nitrogen used in medicine as anaesthetic is
Nitric oxide
Nitrogen dioxide
Nitrogen pentoxide
Nitrous oxide
The formula of Plaster of Paris is
2CaSO4, H2O
CaSO4
CaSO4, 2H2O
2CaSO4, 4H2O
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
According to Daltons atomic theory the smallest particle which can exist independently is
An atom
A cation
A molecule
An anion
Cell membrane is
permeable
semipermeable
selectively permeable
impermeable
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
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
Apparatus invented by Archimedes is :
Pulley
Microscope
Thermemoter
Barometer
The major ingredient of leather is
Nucleic acid
Carbohydrate
Collagen
Polymer
The metal that is present in Photo Films is
Silver
Magnesium
Platinium
Mercury
The location and energy of an electron in an atom can be specified by
Atomic number
Atomic mass
Quantum numbers
None of these
Brass gets discoloured in air due to the presence of which gas in air
Carbon dioxide
Hydrogen Sulphide
Oxygen
Nitrogen
Pollination by birds is called
autogamy
entomophily
anemophily
ornithophily
Bromine is
A Black solid
A red liquid
A highly inflammable gas
colourless gas insoluble in water
The marine animal called dugong which is vulnerable to extinction is a/an
Amphibian
Shark
Bony fish
Mammal
The hardest substance available on earth is
Platinum
Quartz
gold
Diamond
Polythene is industrially prepared by the polymerisation of
styrene
methane
ethylene
acetylene
The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
Earthquakes
Magnetic reversals
Hurricanses
Increased deposition of deep-sea sediments
Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called
Carbon Monoxide
Phosgene
Phosphine
None of these
Which of the following is the lightest metal ?
Mercury
Lithium
Lead
Silver