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how can you seperate two immiscible liquids ?
(d) Sol is a liquid-solid colloid and Gel is a solid-liquid colloid
state some examples of diffusion in solid, gases, liquid
(d) Blood is a compound and sea water is a mixture
is air a mixture or compound? give 3 reasons.
what is crystallization?
(a) How can we separate a mixture of two miscible liquids ?
Is growth ofbody (human) a physical change or a chemical change?
10 difference between 3 states of matter
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?
why is crystallization technique better than evaporation
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)
why do liquids flow ? Explain .
State three reasons why you think air is a mixture and water is a compound.
Is coal a mixture, element or compound?
Differentiate between miscible and immiscible liquids..
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
difference between aqueous and non aqueous solutions?
define aerosol, emulsion, sol, gel
is copper sulphate solution a colloid , solution or a suspension?
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 happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
a growing tree is chemical or phycal change..??
what are the uses of sublimation in daily life( any three uses)?
Calculate the mass of water and mass of glucose required to make 250g of 40% solution of glucose??
pls answer as soon as possible!!!!!!!
draw a flow chart showing the separation of componets of air. Also, name this process?
a solution of urea in water contains 16grams of it in 120 grams of solution. find out the mass percentage of the urea
a solution contains 50g of common salt in 450g of water calculate the concentration of the solution in terms of mass by mass percentage,
water is a compound not a mixture .justify it by giving two reasons
WHAT DO U MEAN BY BULK PHENOMENON
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.
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
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
define colloidal solution....???
rate of evaporation of aqueous solution decreases with increases in humidity?why.
colloidal solutions appear to be homogeneous but actually it is heterogeneous.give justification for this statement
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
by giving two reasons prove that a powder containing iron and sulphur is a mixture but iron supplied is a compound?
explain why water is compound
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
write any 2 applications of chromatography
does chalk powder dissolves in water if not why??
What is the difference in apparatus used for distillation and fractional distillation ?
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
What happens when dilute HCl is poured on a mixture of iron and sulphur.
True solution stable
Colloid is stable
and Suspension is unstable.
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
5g of sugar is dissolved in 250 ml of solution.Calculate its mass % by volume
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
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.
the rate of diffusion of liquids is higher than that of solids. 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
name the process by which common salt is obtained from sea water.
You are provided with mixture of camphor, common salt and soil.Using various techniques how will you separate the components of this mixture. Write the various steps involved.
Which gas forms the liquid first as the air is cooled?
A mixture is prepared by mixing two liquids A and B. Which property will be used to seperate them by the process of distillation?
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
A student was asked to prepare a true solution of sugar in water.By chance he added excwss sugar .He stirred the mixture for quite some time but some of it settled down.He filtered the contents.The filtrate will be?
d)can be true solution or colloidal solution
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
Classify the following into elements, compound and mixtures:
Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, water, chalk.
Beakers A and B contains a solution of potassium permanganate and a mxiture of chalk powder in water . Mention one point of difference that you would observe in the two mixtures . On the basis of the observation categorise the two as homogeneous and hetrogeneous mixture.
on suffering from fever which will lower down your body temperature more ice or ice cold water ?why?
classify the following as element,compound and mixture: iron,sea water,milk
HOW CAN U OBTAIN PURE COPPER SULPHATE FROM IMPURE SAMPLE?
the spaces between the constituent particles are maximum in gases
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
is muddy water a colloidal solution or a suspension ?
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