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how can you seperate two immiscible liquids ?
(d) Blood is a compound and sea water is a mixture
state some examples of diffusion in solid, gases, liquid
(d) Sol is a liquid-solid colloid and Gel is a solid-liquid colloid
is air a mixture or compound? give 3 reasons.
what is crystallization?
An object is moving with uniform speed in a circle of radius r. Calculate the distance and displacement (a) When it complete half the circle (b) When it completes full circle (c) What type of motion does the object possess ? (Justify your answer)
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
a growing tree is chemical or phycal change..??
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.
a solution of urea in water contains 16grams of it in 120 grams of solution. find out the mass percentage of the urea
What is the dispersed phase and the dispersion medium in milk?
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.
Is growth ofbody (human) a physical change or a chemical change?
Differentiate between miscible and immiscible liquids..
Is coal a mixture, element or compound?
difference between aqueous and non aqueous solutions?
A solution contains 30g of glucose and 20g of sugar in 500 mL of water. Calculate the mass percentage of glucose and sugar. (Density= 1g/mL)
define aerosol, emulsion, sol, gel
Why is it not possible to distinguish particles of a solute from the particles of solvent in a true solution
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
Calculate the mass of water and mass of glucose required to make 250g of 40% solution of glucose??
pls answer as soon as possible!!!!!!!
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?
is copper sulphate solution a colloid , solution or a suspension?
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
Sheela heated a mixture of iodine and commom salt by keeping an inverted funnel on it. After sometime what will she observe ?A) white fumes come out form the mixture.B) violet particles deposit on the neck of the funnel.C) white particles deposit on the nect of the funnel.D)a gas with popping soung comes out.
what are the uses of sublimation in daily life( any three uses)?
classify the following as element,compound and mixture: iron,sea water,milk
draw a flow chart showing the separation of componets of air. Also, name this process?
5g of sugar is dissolved in 250 ml of solution.Calculate its mass % by volume
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
does chalk powder dissolves in water if not why??
water is a compound not a mixture .justify it by giving two reasons
WHAT DO U MEAN BY BULK PHENOMENON
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
how many litres of a 5.0%(w/v) glucose solution would you take to obtain 75 g glucose
define colloidal solution....???
rate of evaporation of aqueous solution decreases with increases in humidity?why.
why iron sulphide is a compound and not a mixture?
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
the spaces between the constituent particles are maximum in gases
explain why water is compound
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 are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
What is milk of magnesia?
in our NCERT its given colloid but in other books it is is specified as a suspension also the net says it .So can u tell me about it
write any 2 applications of chromatography
1. calculate the masses of cane sugar and water required to prepare 200 grams of 15% mass by mass solution of cane sugar and water.
2. it is desired to prepare 500 grams of 10%mass by mass percentage of urea in water. how much urea should be dissolved in how much volume of water? density of water is 1gm/l
What is the difference in apparatus used for distillation and fractional distillation ?
7g of iron fillings and 4g of sulphur powder iz ttreated with dil. h2so4 at room temperature. name the gas produced?
1) same mixture iz heated strongly and heated with dil h2so4 which gas would be produced?
2) what is the cause of this differencein results od chemical reaction in differnt conditions?
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 5% sugar solution means?
i) 5g of sugar is dissolved in 95g of water
ii) 5g of sugar dissolved in 100g of water
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
Define concentration. If 4mL of acetone is present in 60 mL of its aqueous solution, calculate the concentration of this solution.
How can you distinguish between a salt solution and a pure liquid without tasting it?
the rate of diffusion of liquids is higher than that of solids. why?
what mass of water must be added to 5g of Nacl to make 5% mass by mass percentage of the solution ?????????.............
name the process by which common salt is obtained from sea water.
how will u separate the crystals from the liquid in the china dish
Which gas forms the liquid first as the air is cooled?
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.
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
out of given four mixture, the one that appears clear and transparent is :
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
Name the gas produced when a mixture of 7 g of iron filing and 4 g of sulphur powder is treated with dilute Sulphuric acid at room temperature ? What gas would be produced if the same mixture is first heated strongly, cooled and then treated with dilute Sulphuric acid ? State the causes of this difference in behaviour
Classify the following into elements, compound and mixtures:
Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, water, chalk.
on suffering from fever which will lower down your body temperature more ice or ice cold water ?why?
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
10 g of sugar is present in 1 ltr of sugar solution . calculate the concentration in terms of mass by volume percentage of a soil
True solution stable
Colloid is stable
and Suspension is unstable.
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
CLASSIFY THE FOLLOWING INTO TRUE SOLUTION,COLLOIDAL AND SUSPENSION:
soda-water, milk, sugar-water mixture, blood, ink, smoke in air, chalk-water mixture, shaving cream, muddy river water, lemon juice..
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