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how can you seperate two immiscible liquids ?
is air a mixture or compound? give 3 reasons.
state some examples of diffusion in solid, gases, liquid
Is coal a mixture, element or compound?
what is crystallization?
Explain why water is a compound and not a mixture ?
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
The solubility of potassium Chloride at 20 degree C is 34.7 g in 100 gm of water. The density of the solution is 1.3 g/ml. What is the w/V % of potassium chloride in the solution? Please give the explanation.
what is the difference between distillation and fractional distillation in tabular form?and dont tell mw that go to this link . give me this answer by typing in tabular form.
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
why is crystallization technique better than evaporation
What is the dispersed phase and the dispersion medium in milk?
why do liquids flow ? Explain .
State three reasons why you think air is a mixture and water is a compound.
Sucrose (sugar) crystals obtained from sugarcaneand beetroot are mixed together.Will it be a pure substance or a mixture?Give reasons for the same
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
define aerosol, emulsion, sol, gel
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
is muddy water a colloidal solution or a suspension ?
melting of wax is a physical change whereas burning of candle is a chemical change why?
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
what is the difference between sol,gel and emulsion?
what are the uses of sublimation in daily life( any three uses)?
A mixture contains only Iodine , Ammonium chloride and sand. Only Iodine and nAmmonium chloride sublime. Only Iodine dissolves in carbon tetra chloride.
How will you seperate the three components? Sequence of steps will be
a) By sublimation addition of CCl4
b) Addition of CCl4 , filtration, sublimation
c) Sublimation, addition of H2O, filtration.
d) evaporation, distillation, crystalization
draw a flow chart showing the separation of componets of air. Also, name this process?
pls answer......
Which method is used to separate benzene from water
water is a compound not a mixture .justify it by giving two reasons
Is growth ofbody (human) a physical change or a chemical change?
WHAT DO U MEAN BY BULK PHENOMENON
Which method will you use to separate :
a)components of air
b)acetone and water
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
define colloidal solution....???
rate of evaporation of aqueous solution decreases with increases in humidity?why.
A student was asked to mix the white of an egg with water and stir well.The student observed that -( 1) Atransparent solution is formed. 2) A translucent mixture is formed. 3) Egg white settles down at the bottom ,(4) Egg white floats on the surface of water.
give reason for your answer
.
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
how would you separate the mixture containing sulphur and sand
explain why water is compound
how can i prepare a saturated solution of sodium chloride in water at 25 degree celcius? what will happen if this solution is cooled at 10 degree celcius ?
a growing tree is chemical or phycal change..??
write any 2 applications of chromatography
ink is true solution or colloid or suspension??
some say true solution because its only powder and water.
some say colloid.
is it suspension because we can see so many colors when we do chromatography
What is the difference in apparatus used for distillation and fractional distillation ?
classify the following into true solution or colloidal solution
brine,milk,ink,blood,common salt dissolved in water,jelly,egg,lime water
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
What happens when dilute HCl is poured on a mixture of iron and sulphur.
suggest separation technique
1,mercury and water
2.potassium chloride and ammonium chloride
3.common salt,water and sand
4.kerosene oil,water and sand
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
is kerosene a pure substance
the rate of diffusion of liquids is higher than that of solids. why?
name the process by which common salt is obtained from sea water.
Is the tea in teabags a pure substance? Why?
Which gas forms the liquid first as the air is cooled?
Is soda water a homogeneous or heterogeneous mixture? Explain?
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
on suffering from fever which will lower down your body temperature more ice or ice cold water ?why?
Classify the following into elements, compound and mixtures:
Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, water, chalk.
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
define evaporation
How can we separate a mixture of two miscible liquids? Explain and also write the name of method?
how will u separate common salt ,sulphur powder n sand from their mixture
EXPLAIN why particles of colloidal solution do not settle down when kept undisturbed whereas particles of suspension do settle down?
How do you seperate amino acids from fruit juice solution?
How 'sea-water' can be classified as a homogeneous as well as heterogeneous mixture ?
Mallika's mother was suffering from cold and cough.Mallika prepared tea for her mother.She boiled water in a pan,then she added tea leaves,sugar,and milk to it.She filtered the tea in a cup and served to her mother.
(a) Explain the values shown by Mallika.
(b) Identify solute,solvent,residue and filtrate in this activity.
(a
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Syllabus
how can you seperate two immiscible liquids ?
is air a mixture or compound? give 3 reasons.
state some examples of diffusion in solid, gases, liquid
Is coal a mixture, element or compound?
a)dilute sulphuric acid is added to a mixture of iron fillings and sulphur powder
b)dilute sulphuric acid is added to a mixture of iron fillings and sulphur powder heated to red hot followed by cooling
what is crystallization?
Explain why water is a compound and not a mixture ?
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
The solubility of potassium Chloride at 20 degree C is 34.7 g in 100 gm of water. The density of the solution is 1.3 g/ml. What is the w/V % of potassium chloride in the solution? Please give the explanation.
what is the difference between distillation and fractional distillation in tabular form?and dont tell mw that go to this link . give me this answer by typing in tabular form.
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
why is crystallization technique better than evaporation
What is the dispersed phase and the dispersion medium in milk?
why do liquids flow ? Explain .
Answer in both cases
(It is practical based question)
State three reasons why you think air is a mixture and water is a compound.
Sucrose (sugar) crystals obtained from sugarcaneand beetroot are mixed together.Will it be a pure substance or a mixture?Give reasons for the same
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
muddy water , sugar in water , ink blood , soda water , foam
define aerosol, emulsion, sol, gel
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
is muddy water a colloidal solution or a suspension ?
melting of wax is a physical change whereas burning of candle is a chemical change why?
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
what is the difference between sol,gel and emulsion?
what are the uses of sublimation in daily life( any three uses)?
A mixture contains only Iodine , Ammonium chloride and sand. Only Iodine and nAmmonium chloride sublime. Only Iodine dissolves in carbon tetra chloride.
How will you seperate the three components? Sequence of steps will be
a) By sublimation addition of CCl4
b) Addition of CCl4 , filtration, sublimation
c) Sublimation, addition of H2O, filtration.
d) evaporation, distillation, crystalization
1) what could be X
2) name the material Y
3) name the process Z
4) which process you would use to recover both the components X and Y from tincture of iodine .
draw a flow chart showing the separation of componets of air. Also, name this process?
pls answer......
Which method is used to separate benzene from water
water is a compound not a mixture .justify it by giving two reasons
Is growth ofbody (human) a physical change or a chemical change?
separate the mixture. Name the technique used by Rahul and explain how he will do.
Draw the diagram and write the principle of this technique
WHAT DO U MEAN BY BULK PHENOMENON
Which method will you use to separate :
a)components of air
b)acetone and water
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
define colloidal solution....???
rate of evaporation of aqueous solution decreases with increases in humidity?why.
A student was asked to mix the white of an egg with water and stir well.The student observed that -( 1) Atransparent solution is formed. 2) A translucent mixture is formed. 3) Egg white settles down at the bottom ,(4) Egg white floats on the surface of water.
give reason for your answer
.
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
how would you separate the mixture containing sulphur and sand
explain why water is compound
how can i prepare a saturated solution of sodium chloride in water at 25 degree celcius? what will happen if this solution is cooled at 10 degree celcius ?
a growing tree is chemical or phycal change..??
write any 2 applications of chromatography
ink is true solution or colloid or suspension??
some say true solution because its only powder and water.
some say colloid.
is it suspension because we can see so many colors when we do chromatography
What is the difference in apparatus used for distillation and fractional distillation ?
classify the following into true solution or colloidal solution
brine,milk,ink,blood,common salt dissolved in water,jelly,egg,lime water
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
What happens when dilute HCl is poured on a mixture of iron and sulphur.
suggest separation technique
1,mercury and water
2.potassium chloride and ammonium chloride
3.common salt,water and sand
4.kerosene oil,water and sand
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
is kerosene a pure substance
the rate of diffusion of liquids is higher than that of solids. why?
(i)souring of milk is a chemical change
(ii)mixing of iron and sulphur is a physical change but heating this mixture is a chemical change
name the process by which common salt is obtained from sea water.
Is the tea in teabags a pure substance? Why?
Which gas forms the liquid first as the air is cooled?
Is soda water a homogeneous or heterogeneous mixture? Explain?
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
on suffering from fever which will lower down your body temperature more ice or ice cold water ?why?
Classify the following into elements, compound and mixtures:
Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, water, chalk.
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
define evaporation
How can we separate a mixture of two miscible liquids? Explain and also write the name of method?
how will u separate common salt ,sulphur powder n sand from their mixture
EXPLAIN why particles of colloidal solution do not settle down when kept undisturbed whereas particles of suspension do settle down?
How do you seperate amino acids from fruit juice solution?
How 'sea-water' can be classified as a homogeneous as well as heterogeneous mixture ?
Mallika's mother was suffering from cold and cough.Mallika prepared tea for her mother.She boiled water in a pan,then she added tea leaves,sugar,and milk to it.She filtered the tea in a cup and served to her mother.
(a) Explain the values shown by Mallika.
(b) Identify solute,solvent,residue and filtrate in this activity.
(a