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
Correct Answer :
A. charcoal
Related Questions
Clark's method for removal of temporary hardness in water uses
calcium hydroxide
washing soda
calcium chloride
zeolite
Which of the following is not a supporter of combustion?
Oxygen
Air
Hydrogen
Chlorine
A mixture of ethyl alcohol and water can be separated by
evaporation
sublimation
using a separating funnel
fractional distillation
The function of nitrogen in air is
to make air a moderate supporter of combustion
to maintain the density of air constant
to prevent the hydrogen in air from exploding
to reduce the poisonous nature of ozone in air
A form of carbon which is a good lubricant is
diamond
coke
graphite
charcoal
The ore of iron is
Dolomite
Magnetite
Bauxite
Anglesite
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
An example of stimulant fertilizer is
gypsum
urea
potassium nitrate
ammonium phosphate
Coke is a substance obtained
from coal mines
when wood is burnt in excess of air
by heating coal out of contact with air
by heating wood out to contact with air
Tincture iodine is
a disinfectant
an analgesic
a hypnotic
a dye
Gold dissolves in aqua regia due to the formation of
chloro auric acid
auric chloride
gold nitrate
aurous chloride
Gasoline is obtained from crude petroleum by
fractional distillation
fractional crystallisation
sublimation
evaporation
Solder is an alloy of
tin and copper
tin and lead
tin and zinc
tin, copper and zinc
Smelling salt contains
ammonium chloride
ammonium carbonate
ammonium sulphate
potassium nitrate
Soda-water contains
sodium bicarbonate
sodium carbonate
carbonic acid
sodium hydroxide
Colour blindness is
a congenital disease
a communicable disease
an acquired disease
a contagious disease
Which or the following is not a constituent or gun powder?
Ammonium nitrate
Nitre
Charcoal powder
Sulphur
PAS is a drug used In the treatment of
tuberculosis
cancer
typhoid
malaria
Which of the following carbon compounds is used as a fire extinguisher?
Carbon disulphide
Chloroform
Carbon tetrachloride
Methylene chloride
Iron is rendered passive by
conc. H2SO4
conc. HCl
conc. HNO3
acetic acid
Brass contains
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc
Which one of the following gases is extremely soluble in water?
Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide
Flint glass contains
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
White lead is
a basic salt
an acid salt
a double salt
a normal salt
The Long Form of the Periodic Table is based on
atomic number
valency
atomic mass
atomic radius
Invar, used for making pendulums is an alloy of steel with
tungsten
nickel
manganese
chromium
Suspended impurities in water are effectively removed by
adding milk of lime
filtering through sand
adding filter alum
chlorination
Stainless steel contains steel and
manganese
vanadium
nickel
chromium
According to the modern Periodic Law, the properties of elements are periodic functions of their
valency
atomic mass
number of neutrons
atomic number
Diamonds are weighed in
grams
pounds
carats
tons