The Long Form of the Periodic Table is based on
atomic number
valency
atomic mass
atomic radius
Correct Answer :
A. atomic number
Related Questions
The name rubber was given by
Lavoisier
Priestley
Dalton
Avogadro
Grape sugar is another name for
glucose
fructose
sucrose
maltose
Acute diabetes patients smell of
acetone
ether
ethyl alcohol
methyl alcohol
Biogas is obtained during
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
According to the modern Periodic Law, the properties of elements are periodic functions of their
valency
atomic mass
number of neutrons
atomic number
Which of the following is not a food material?
silicate
protein
fat
carbohydrate
Marble is
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
Riboflavin deficiency causes
tongue inflammation
pellagra
night blindness
anaemia
Carbogen is used in
CO2 poisoning
CO poisoning
phosgene poisoning
anesthesia
The human body contains about
50% water
10% water
70% water
20% water
The first organic compound prepared in the laboratory was
acetic acid
chloroform
urea
methane
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 non-metal which is a good conductor of electricity is
graphite
phosphorus
sulphur
iodine
Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?
Silicon
Oxygen
Carbon
Calcium
Brine is a solution of
sodium chloride in water
iodine in alcohol
sulphur in carbon disulphide
Potassium iodide in water
Bordeaux mixture contains
copper sulphate and water
copper sulphate, lime and water
thio-urea and lime
copper sulphate and thio-urea
Which is the 'odd man' in the following?
brass
common salt
cane sugar
water
The value of Avogadro Number is
6.023 x 1022
1 x 10-14
cl 6.056 x 10-6
6.023 x 1023
The alloy added in the preparation of steel contains
Fe and C
Mn and C
Fe and Mn
Fe, Mn and C
Boiler scales' contain
calcium carbonate
magnesium bicarbonate
calcium sulphate
magnesium sulphate
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
A light alloy having high tensile strength is
German silver
solder
magnalium
bell metal
Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
Aluminium
Chromium
Nickel
Tungsten
Rusting is a special case of corrosion applied to
nickel
tin
iron
chromium
Temporary hardness is due to the presence of
calcium carbonate
calcium bicarbonate
magnesium sulphate
calcium sulphate
In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is
charcoal
bleaching powder
chlorine
carbolic acid
Washing soda is
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride
Annealing of glass is done in
a cupel
a long narrow chamber
an open furnace
a closed furnace
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
Which one of the following gases is extremely soluble in water?
Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide