Brine is a solution of
sodium chloride in water
iodine in alcohol
sulphur in carbon disulphide
Potassium iodide in water
Correct Answer :
A. sodium chloride in water
Related Questions
Invar, used for making pendulums is an alloy of steel with
tungsten
nickel
manganese
chromium
Laughing gas is
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
Annealing of glass is carried out by
rapid cooling
rapid heating
slow cooling
slow heating
The scientist who synthesised the first organic compound (urea) in the laboratory was
Wohler
Dalton
Lavoisier
Fischer
The substance most abundantly found in sea water is
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
Rusting is
an oxidation process
a reduction process
a physical change
an electro-chemical process
Methylated spirit is a mixture of
methyl alcohol and acetic acid
methyl alcohol and ethyl alcohol
ethyl alcohol and pyridine
methyl alcohol and pyridine
Rusting is a special case of corrosion applied to
nickel
tin
iron
chromium
The neutron was discovered by
Chadwick
Madam Curie
Becquerel
Aston
If people sleep in closed rooms where charcoal fire is burning, they die due to
carbon monoxide
carbon dioxide
methane
phosgene
Galvanising is coating Iron with
nickel
zinc
chromium
copper
Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
three
four
one
five
A non-metal which is a good conductor of electricity is
graphite
phosphorus
sulphur
iodine
Which of the following is used as a food preservative?
phenol
washing soda
absolute alcohol
vinegar
Lead pencils contain
white lead
graphite
red lead
coke
A burning substance which continues to burn in a jar of carbon dioxide is
zinc
red phosphorus
magnesium
sulphur
The Combined Gas Law equation is
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
Which of the following is an essential constituent of acids?
Oxygen
Nitrogen
Hydrogen
Chlorine
Galvanised iron sheets are protected from rusting due to the presence of a layer of
lead
chromium
zinc
tin
Oil of winter green contains
acetone
ether
acetic acid
methyl salicylate
Flint glass contains
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
Ascorbic acid is the chemical name for
Vitamin B6
Vitamin C
Vitamin K
Vitamin D
Which of the following la a very good supporter of combustion?
Carbon monoxide
Oxygen
Nitrogen
Hydrogen
The flux added in the blast furnace is
Limestone
FeO
SiO2
MgO
Iron is rendered passive by
conc. H2SO4
conc. HCl
conc. HNO3
acetic acid
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
Which of the following is not a chemical change?
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
Clark's method for removal of temporary hardness in water uses
calcium hydroxide
washing soda
calcium chloride
zeolite
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'
Which or the following gases is soluble in water and Is collected by the downward displacement or air?
Carbon dioxide
Sulphur dioxide
Ammonia
Hydrogen