Rusting is a special case of corrosion applied to
nickel
tin
iron
chromium
Correct Answer :
C. iron
Related Questions
Biogas is obtained during
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
The earliest known acid is
nitric acid
oxalic acid
carbonic acid
acetic acid
The main constituent of gobar gas is
methane
nitrogen
carbondioxide
ethylene
Laughing gas is
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
Which of the following is not a characteristic of potable water?
It must be free from suspended impurities
It must be free from harmful bacteria
It must contain traces of sodium bicarbonate
It must have a fishy odour
The Carbon dioxide is absorbed by
Palladium
NaCI
KOH
Dilute H2SO4
LSD is
an anaesthetic
a psychedelic drug
an antipyretic
an antibiotic
The substance most abundantly found in sea water is
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
The raw materials used in the manufacture of cement are
brimstone and silica
limestone and clay
brimstone and clay
brimstone and limestone
The main element used in the vulcani-sation of rubber is
nickel
copper
sulphur
graphite
Clark's method for removal of temporary hardness in water uses
calcium hydroxide
washing soda
calcium chloride
zeolite
Rooms in places infected by plague are disinfected using
bleaching powder
iodoform
sulphur dioxide
chlorine
Which among the following is a local anaesthetic?
Chloroform
Morphine
Streptomycin
Cocaine
Galvanising is the process of coating
iron with zinc
zinc with iron
copper with silver
silver with gold
The fertilizer which has the largest percentage of nitrogen is
urea
ammonium nitrate
ammonium sulphate
calcium cyanamide
Which of the following metals is the best conductor of heat and electricity?
Aluminium
Silver
Copper
Magnesium
The modern system of symbols was evolved by
Dalton
Cavendish
Avogadro
Berzelius
Which of the following is not a chemical change?
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
Iodine in alcohol is known as
quick lime
tincture iodine
rectified spirit
None of these
The malarial parasite was discovered by
Sir Ronald Ross
Sir Francis Haig
Dr Jagadish Chandra Bose
Sir CV Raman
Soda-water contains
sodium bicarbonate
sodium carbonate
carbonic acid
sodium hydroxide
Rusting is a special case of corrosion applied to
nickel
tin
iron
chromium
The poisonous nature of carbon monoxide is due to
cutting off supply of oxygen
it™s being converted into carbon dioxide
its combination with haemoglobin of blood
its blocking of vocal chords
Which of the following is baking soda?
Na2CO3 . 10H2O
NaHCO3
Na2CO3 . H2O
NH4CI
Hard water does not lather well with soap because
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
The gas used in balloons in the place of hydrogen is
nitrogen
helium
neon
argon
Which of the following is used as an illuminant?
Gasoline
Benzoline
Kerosene
Petroleum ether
Petroleum ether is also known as
kerosene
naphtha
lubricating oil
asphalt
Solid carbon dioxide (Dry ice) is also known as
Thiokol
Drikold
Perhydrol
Mannitol
Rain water collected after a shower la very pure because
the initial showers wash the atmosphere free from most of the impurities
it contains desirable salts like sodium chloride and ammonium nitrate
it dissolves the gases in the atmosphere like ozone which are good for health in small quantities
it is supposed to be 'heaven sent'