Mixtures are constituted by more than one kind of pure form of matter, known as a .............
material
substance
evaporation
none of these
A substance cannot be separated into other kinds of matter by any ,.........process.
physical
chemical
both
none of these
dissolved sodium chloride can be separated from water by the physical process of ....................
sublimation
diffusion
evaporation
none of these
................. are homogeneousmixtures of metals and cannot be separated into their components by physical methods.
Alloys
metal
non metal
none of these
A ..............is a homogeneous mixture of two or more substances
suspension
solution
colloidal
none of these
The component of the solution that dissolves the other component in it is called the ................
solvent
solute
both
none of these
A solution of iodine in alcohol known as .............
liquid solution
lemonade
tincture of iodine
ionoid
The particles of a solution are ,...............than 1 nm (10-9 metre) in diameter. So,they cannot be seen by naked eyes.
equal
greater
smaller
none of these
At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving, is said to be a ..............solution
saturated
unsaturated
trans
none of these
The amount of the solute present in the saturated solution at this temperature is called its
suspension
sublimation
solublity
saturated solution
. A suspension is a ...................mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium
homogenous
hetrogeneous
both
none of these
when dispersed phase is liquid and the dispersed phase is gas it form ......................
emulsion
foam
aerosol
cheese
Coloured gemstone, milky glass are examples of
foam
sol
gel
soild sol
we can separate the volatile component (solvent) from its non-volatile solute by the method of
evaporation
filtration
sublimation
chromotography
what method is used in in diagnostic laboratories for blood and urine tests., in dairies and home to separate butter from cream. , in washing machines to squeezeout water from wet clothes.
sublimation
centrifugation
evaporation
none of these
we can seperate ammonium chloride and salt by the process of
sublimation
evaporation
condensation
chromatography
the method used for the separation of components of a mixture containing two miscible liquids that boil without decomposition and have sufficient difference in their boiling points is ........................
sublimation
evaporation
distillation
filtration
To separate a mixture of two or more miscible liquids for which the difference in boiling points is less than 25 K,............... process is used,
filtration
sublimation
condensation
fractional distillation
the salt we get from sea water can have many impurities init. To remove these impurities, the process of ...............is used.
solidification
crystallisation
sublimation
purification
A ..............is a substance composed of two or more elements, chemically combined with one another in a fixed proportion
mixture
substance
element
compound
Aerated drinks like soda water etc., are gas in liquid solutions. These contain .............. as solute and water (liquid) as solvent
carbon dioxide
sugar
salt
oxygen
Concentration of solution = Amount of ............/ Amount of ..........
solution , solute
solute, solution
both
none of these
The particles of a ................can be seen by the naked eye
suspension
true
colloidal
none of these
when dispered phase is liquid and dispersed medium is solid it form .....................type of colloid.
aerosol
foam
emulsion
gel
To separate colours in a dye , pigments from natural colours , drugs from blood
chromotography
distillation
filtration
fusion
The crystallisation method is used to purify ................
liquid
plasm
solid
gas
gold, silver, copper, iron, sodium, potassium etc. are examples of
metal
non metal
metalloids
alloy
The properties of the mixture are the same as that of its ,.......................