Petroleum ether is also known as
kerosene
naphtha
lubricating oil
asphalt
Correct Answer :
B. naphtha
Related Questions
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 scientist who synthesised the first organic compound (urea) in the laboratory was
Wohler
Dalton
Lavoisier
Fischer
Iron is rendered passive by
conc. H2SO4
conc. HCl
conc. HNO3
acetic acid
Which one of the following is used for dry cleaning?
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
Vulcanisation was discovered by
Goodyear
Wohler
Baeyer
Perkin
The presence of dust particles in air serves
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
Invert sugar is
sucrose
glucose
fructose
a mixture of glucose and fructose
What is 'oxygen mixture'?
A mixture of potassium nitrate and carbon
A mixture of ammonium chloride and sodium nitrate
A mixture of potassium chlorate and manganese dioxide
A mixture of ammonium nitrate and charcoal
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
Mortar contains cement and sand in the ratio of
1 : 1
1 : 2
2 : 3
1 : 3
PAS is a drug used In the treatment of
tuberculosis
cancer
typhoid
malaria
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
When ants bite, they inject
glacial acetic acid
methanol
formic acid
stearic acid
Which of the following la a very good supporter of combustion?
Carbon monoxide
Oxygen
Nitrogen
Hydrogen
Artificial diamonds were produced by
Moissan
Davy
Faraday
Marie Curie
Which of the following is not a food material?
silicate
protein
fat
carbohydrate
Optical instruments are made of
pyrex glass
flint glass
quartz glass
Crooke's glass
Rusting of iron cannot be prevented by
painting
applying alkaline phosphate
applying soap water
galvanising
Galvanising is coating Iron with
nickel
zinc
chromium
copper
Galvanising is the process of coating
iron with zinc
zinc with iron
copper with silver
silver with gold
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
The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by
A - Z
A + Z
Z
A
The human body contains about
50% water
10% water
70% water
20% water
The simplest hydrocarbon is
benzene
methane
ethane
butane
White lead is
a basic salt
an acid salt
a double salt
a normal salt
Ethyl alcohol is
a deliquescent substance
an efflorescent substance
a hygroscopic substance
a dehydrating substance
The best specimen for drinking purposes is
rain water
river water
conductivity water
deep well water
Ozone occurs in the upper layers of air in the atmosphere because
it is lighter than air
in the lower layers it becomes unstable
ultra-violet light is present only in the upper layers
it mixes freely with O2 in the upper layers
The non-metal which has a shining appearance is
sulphur
phosphorus
iodine
bromine
Rusting is a special case of corrosion applied to
nickel
tin
iron
chromium