The gas which has a faint sweet odour is
nitrogen
nitrous oxide
nitric oxide
nitrogen peroxide
Correct Answer :
B. nitrous oxide
Related Questions
Compounds containing only carbon and hydrogen are called
carbohydrates
carbides
hydrocarbons
carbonyls
Brass contains
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc
Which of the following is not a chemical change?
Rusting of iron
Burning of magnesium
Sublimation of iodine
Electrolysis of water
Rooms in places infected by plague are disinfected using
bleaching powder
iodoform
sulphur dioxide
chlorine
Sulphur is readily soluble in
Water
Alcohol
Carbon-di-sulphide
Sodium chloride solution
The formula for cane sugar is
C6H12O6
C2H5OH
C12H22O11
C7H8O
Which of the following is not an antibiotic?
streptomycin
terramycin
aureomycin
codein
Vinegar is an aqueous solution of
oxalic acid
citric acid
acetic acid
hydrochloric acid
Cinnabar is an ore of
lead
zinc
mercury
chromium
Glass articles are annealed so that
they may appear better
they can resist the action of acids and alkalies
they lose their brittleness
they can withstand temperature shocks
The addition of a neutron to the nucleus of an atom
increases the atomic mass of the atom
decreases the atomic mass of the atom
increases the charge on the nucleus
decreases the charge on the nucleus
Tincture iodine is
a disinfectant
an analgesic
a hypnotic
a dye
Copper is purified by
poling
tempering
calcination
galvanising
Even as early as 3000 BC glass was known to the
Europeans
Egyptians
Asians
Americans
The substance most abundantly found in sea water is
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
The term 'nucleons' apples to
neutrons
protons
protons and neutrons
protons and electrons
Which of the following is a Bleaching agent?
Potassium chlorate
Hydrogen peroxide
Copper sulphate
Silver Nitrate
Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
three
four
one
five
Nitrous oxide used as anaesthetic is usually mixed with
ethyl alcohol
chloroform
oxygen
methyl alcohol
In addition to nitric acid, another acid which may render iron passive is
acetic acid
oxalic acid
chromic acid
citric acid
The flux added in the blast furnace is
Limestone
FeO
SiO2
MgO
Real gases tend to become ideal Under
low pressure and high temperature
low pressure and low temperature
high pressure and low temperature
high pressure and high temperature
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
Vinegar is the trade name for
chloroform
acetic acid
phenol
carbon tetrachloride
Grape sugar is another name for
glucose
fructose
sucrose
maltose
Which or the following gases is soluble in water and Is collected by the downward displacement or air?
Carbon dioxide
Sulphur dioxide
Ammonia
Hydrogen
A metal which occurs 'free' in nature is
gold
zinc
tin
molybdenum
Rusting of iron cannot be prevented by
painting
applying alkaline phosphate
applying soap water
galvanising
A non-material kind of pollution is
land pollution
air pollution
noise pollution
water pollution
The soaps used in shaving cream are
calcium soaps
lead soaps
soft soaps
hard soaps