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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
what is crystallization?
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
3g of solute is dissolved in 30g of water to form of saturated solution at 298k. calculate the solubility of solute at this temprature.
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 is the dispersed phase and the dispersion medium in milk?
Is growth ofbody (human) a physical change or a chemical change?
why is crystallization technique better than evaporation
why do liquids flow ? Explain .
State three reasons why you think air is a mixture and water is a compound.
distinguish between true solution , a suspension a colloid in a tabular form under the following heads :
1) stability
2) filterability
3) type of mixture
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
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
define aerosol, emulsion, sol, gel
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
what is the difference between sol,gel and emulsion?
melting of wax is a physical change whereas burning of candle is a chemical change why?
what are the uses of sublimation in daily life( any three uses)?
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
is kerosene a pure substance
draw a flow chart showing the separation of componets of air. Also, name this process?
pls answer......
a growing tree is chemical or phycal change..??
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
(d) Blood is a compound and sea water is a mixture
water is a compound not a mixture .justify it by giving two reasons
WHAT DO U MEAN BY BULK PHENOMENON
How can you change a saturated solution to unsaturated without adding any more solvent to it
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
draw a neat and labelled diagram of the apparatus used to separate components of blue black ink.name the process and state the principal invoved
define colloidal solution....???
how is
True solution stable
Colloid is stable
and Suspension is unstable.
rate of evaporation of aqueous solution decreases with increases in humidity?why.
does chalk powder dissolves in water if not why??
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
explain why water is compound
Is coal a mixture, element or compound?
write any 2 applications of chromatography
a student heated a mixture of sand and two chemical substances which do not react chemically. in a few minutes the mixture started giving dense white fumes which condensed on a cool glass plate to form white powdery mass.this phenomenon is due to:
a)decantation
b)evaporation
c)sublimation
d)distillation
?
What is the difference in apparatus used for distillation and fractional distillation ?
choose the correct option
rama took a petridish and added four pinches of sulphur powder and two pinches of iron filings .Then she divided the mixture in two parts and took them in two china dish A and B . She heated the samples of dish B strongly and then moved the magnets on sample A and B .
a) iron particles cling to the magnet in case of A
b) iron compound in case of B clings to the magnet
c) iron particles cling in both cases A and B
d) iron particles dont cling in both cases A and B
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
Heat is produced when water is added to pure (absolute) alcohol or concentrated sulphuric acid is added to water . Does it involve a chemical change ?
the rate of diffusion of liquids is higher than that of solids. why?
Explain why water is a compound and not a mixture ?
name the process by which common salt is obtained from sea water.
the mixture will appear tranclucent in case of:
a)CuSO4 +water
b) alum+water
c)sugar+water
d)starch+water
Which gas forms the liquid first as the air is cooled?
difference between homogeneous and heterogeneous mixtures.
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.?????
why sollidified butter is gel and liquid butter an emulsion?
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.
difference between element and compound (atleast 3)?
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
difference between evaporation and crystallization
define evaporation
How do you seperate amino acids from fruit juice solution?
How can we separate a mixture of two miscible liquids? Explain and also write the name of method?
what is the solute and solvent in brass
list some more solid solution with theri solvent & solute
how will u separate common salt ,sulphur powder n sand from their mixture
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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
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?
Answer in both cases
(It is practical based question)
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
3g of solute is dissolved in 30g of water to form of saturated solution at 298k. calculate the solubility of solute at this temprature.
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 is the dispersed phase and the dispersion medium in milk?
Is growth ofbody (human) a physical change or a chemical change?
why is crystallization technique better than evaporation
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
why do liquids flow ? Explain .
State three reasons why you think air is a mixture and water is a compound.
distinguish between true solution , a suspension a colloid in a tabular form under the following heads :
1) stability
2) filterability
3) type of mixture
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
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
define aerosol, emulsion, sol, gel
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
what is the difference between sol,gel and emulsion?
melting of wax is a physical change whereas burning of candle is a chemical change why?
a) a true solution of common salt, sugar and alum
b) a suspension of soil, chalk powder and fine sand in water
c) a colloidal solution of starch in water and egg albumin/milk in water and distinguish between
these on the basis of
? transparency
? filtration criterion
? stability
2. Preparation of
a) A mixture
b) A compound
what are the uses of sublimation in daily life( any three uses)?
a)would not leave residue on filter paper after filtration?
b)would show tyndall effect?
c)would leave leave residue on filter paper after filtration?
d)would give transparent/clear solution?
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
is kerosene a pure substance
a) milk in water b) sugar in water c) sand in water d) wheat flour in cold water
draw a flow chart showing the separation of componets of air. Also, name this process?
pls answer......
a growing tree is chemical or phycal change..??
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
(d) Blood is a compound and sea water is a mixture
water is a compound not a mixture .justify it by giving two reasons
WHAT DO U MEAN BY BULK PHENOMENON
How can you change a saturated solution to unsaturated without adding any more solvent to it
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
draw a neat and labelled diagram of the apparatus used to separate components of blue black ink.name the process and state the principal invoved
define colloidal solution....???
how is
True solution stable
Colloid is stable
and Suspension is unstable.
rate of evaporation of aqueous solution decreases with increases in humidity?why.
does chalk powder dissolves in water if not why??
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
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 .
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
explain why water is compound
Is coal a mixture, element or compound?
write any 2 applications of chromatography
a student heated a mixture of sand and two chemical substances which do not react chemically. in a few minutes the mixture started giving dense white fumes which condensed on a cool glass plate to form white powdery mass.this phenomenon is due to:
a)decantation
b)evaporation
c)sublimation
d)distillation
?
What is the difference in apparatus used for distillation and fractional distillation ?
choose the correct option
rama took a petridish and added four pinches of sulphur powder and two pinches of iron filings .Then she divided the mixture in two parts and took them in two china dish A and B . She heated the samples of dish B strongly and then moved the magnets on sample A and B .
a) iron particles cling to the magnet in case of A
b) iron compound in case of B clings to the magnet
c) iron particles cling in both cases A and B
d) iron particles dont cling in both cases A and B
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
a) gas in liquid b) liquid in liquid
c) solid in liquid d) gas in liquid
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
Heat is produced when water is added to pure (absolute) alcohol or concentrated sulphuric acid is added to water . Does it involve a chemical change ?
the rate of diffusion of liquids is higher than that of solids. why?
muddy water , sugar in water , ink blood , soda water , foam
Explain why water is a compound and not a mixture ?
name the process by which common salt is obtained from sea water.
the mixture will appear tranclucent in case of:
a)CuSO4 +water
b) alum+water
c)sugar+water
d)starch+water
Which gas forms the liquid first as the air is cooled?
difference between homogeneous and heterogeneous mixtures.
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
a)milk b)white of an egg c)common salt d)sand
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
(a) A > B > C (b) A < B > C (c) A < B < C (d) A > B < C
why sollidified butter is gel and liquid butter an emulsion?
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.
difference between element and compound (atleast 3)?
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
difference between evaporation and crystallization
define evaporation
How do you seperate amino acids from fruit juice solution?
How can we separate a mixture of two miscible liquids? Explain and also write the name of method?
what is the solute and solvent in brass
list some more solid solution with theri solvent & solute
how will u separate common salt ,sulphur powder n sand from their mixture