An element which is preserved under water is
Sodium
red phosphorus
white phosphorus
sulphur
Correct Answer :
C. white phosphorus
Related Questions
Which among the following is a local anaesthetic?
Chloroform
Morphine
Streptomycin
Cocaine
Solid carbon dioxide (Dry ice) is also known as
Thiokol
Drikold
Perhydrol
Mannitol
The value of Avogadro Number is
6.023 x 1022
1 x 10-14
cl 6.056 x 10-6
6.023 x 1023
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
The simplest hydrocarbon is
benzene
methane
ethane
butane
Burglar proof safes are made of
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
Concrete is a mixture of
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
The modern system of symbols was evolved by
Dalton
Cavendish
Avogadro
Berzelius
The vitamin that is found in citrus fruits such as lemon and orange is
vitamin C
vitamin B2
vitamin A
vitamin E
Acute diabetes patients smell of
acetone
ether
ethyl alcohol
methyl alcohol
Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
three
four
one
five
The alloy added in the preparation of steel contains
Fe and C
Mn and C
Fe and Mn
Fe, Mn and C
An example of thermo setting plastics is
bakelite
polythene
PVC
Teflon
Gases have
a definite shape but not volume
a definite volume and shape
a definite volume but not shape
neither definite volume nor shape
A common rodenticide is (Rat Poison)
malathion
parathion
zinc phosphide
diuron
Penicillin was discovered by
Alexander Fleming
Sir JJ Thomson
Dr Nessler
Sir John Russel
Which of the following is not a supporter of combustion?
Oxygen
Air
Hydrogen
Chlorine
Stainless steel contains steel and
manganese
vanadium
nickel
chromium
Colour blindness is
a congenital disease
a communicable disease
an acquired disease
a contagious disease
Which of the following statements regarding natural radioactivity is true?
It is spontaneous disintegration of atoms
It is induced by bombardment with projectiles
It is transmutation of atoms with projectiles
It is dependent on temperature
The pure at form of iron is
wrought iron
steel
pig iron
nickel steel
The most abundant constituent in air is
hydrogen
nitrogen
oxygen
noble gases
Oxalic acid is used in the manufacture of
tincture iodine
paints
ink
aerated water
The scientist who synthesised the first organic compound (urea) in the laboratory was
Wohler
Dalton
Lavoisier
Fischer
In the making of jewels, gold is usually mixed with
zinc
tin
copper
aluminium
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'
Argyrol used as eye ointment is a solution of
hydrogen peroxide
silver nitrate
tincture iodine
m-cresol
The atomic number of an element represents
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
A mixture of carbon monoxide and hydrogen is
coal gas
producer gas
water gas
gobar gas
When ants bite, they inject
glacial acetic acid
methanol
formic acid
stearic acid