The compound used in photography is
ammonium dichromate
copper Sulphate
magnesium Sulphate
sodium thiosulphate
Correct Answer :
D. sodium thiosulphate
Related Questions
Apart from lead tetra-ethyl, the other compound used as antiknock is
n-heptane
n-octane
iso-heptane
iso-octane
Which of the following is not an alloy of copper?
Bronze
Brass
Solder
Gun metal
Which of the following can absorb gases quickly?
Activated charcoal
Anthracite coal
Diamond
Graphite
Galvanising is coating Iron with
nickel
zinc
chromium
copper
The oldest known organic compound is
urea
methane
acetic acid
benzene
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
Plaster of Paris
contracts while setting
expands while setting
is highly volatile
does not suffer any changes in volume while setting
The alloy added in the preparation of steel contains
Fe and C
Mn and C
Fe and Mn
Fe, Mn and C
The scientist who synthesised the first organic compound (urea) in the laboratory was
Wohler
Dalton
Lavoisier
Fischer
Which of the following is not a supporter of combustion?
Oxygen
Air
Hydrogen
Chlorine
Artificial diamonds were produced by
Moissan
Davy
Faraday
Marie Curie
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
Which one of the following is used in dry cleaning of garments?
asphalt
naphtha
diesel oil
lubricating oil
PAS is a drug used In the treatment of
tuberculosis
cancer
typhoid
malaria
Lunar caustic is
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
On chemical analysis, a bottle cork is found to contain primarily
proteins
carbohydrates
tannins
lipids
Which of the following cannot be used for the preparation of soap?
oleic acid
acetic acid
palmitic acid
stearic acid
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'
One method by which the components of air can be separated is
shaking with caustic soda solution
shaking with water
fractional distillation of liquid air
passing air over heated magnesium
Solid carbon dioxide (Dry ice) is also known as
Thiokol
Drikold
Perhydrol
Mannitol
Which among the following is a local anaesthetic?
Chloroform
Morphine
Streptomycin
Cocaine
Copper is purified by
poling
tempering
calcination
galvanising
The modern system of symbols was evolved by
Dalton
Cavendish
Avogadro
Berzelius
Radium was isolated from
galena
dolomite
sylvine
pitchblende
Which of the following is a halogen?
Radon
Astatine
Cesium
Ruthenium
The main element used in the vulcani-sation of rubber is
nickel
copper
sulphur
graphite
Invar, used for making pendulums is an alloy of steel with
tungsten
nickel
manganese
chromium
The non-metal which is electropositive is
chlorine
nitrogen
sulphur
hydrogen
A metal which occurs 'free' in nature is
gold
zinc
tin
molybdenum
Nylon is made from
terephthalic acid and ethylene glycol
hexamethylene diamine and adipic acid
cellulose nitrate
cellulose acetate