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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 ?
10 difference between 3 states of matter
does chalk powder dissolves in water if not why??
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
Is coal a mixture, element or compound?
why do liquids flow ? Explain .
Is growth ofbody (human) a physical change or a chemical change?
State three reasons why you think air is a mixture and water is a compound.
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.
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
is copper sulphate solution a colloid , solution or a suspension?
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 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)
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
what are the uses of sublimation in daily life( any three uses)?
A suspension of chalk in water can be prepared by;
(a) placing a piece of chalk in water.
(b) placing powdered chalk in water.
(c) placing powdered chalk in water and then vigrously shaking.
(d) placing powdered chalk in HCl.
draw a flow chart showing the separation of componets of air. Also, name this process?
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
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
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)
define colloidal solution....???
(ii) Which food colouring contained the most dyes?
(c) Which food colouring did not dissolve in the water?
(d) Which method did Gary use to separate the dyes?
rate of evaporation of aqueous solution decreases with increases in humidity?why.
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
glucose in water is colloid or true solution
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
a growing tree is chemical or phycal change..??
What is the difference in apparatus used for distillation and fractional distillation ?
bar of metal has a mass 200 g and the certain weight mass remain the same when weighted at equator but weight decreases.why?
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
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.
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
Name two metals which become liquids slightly above room temperature.
the rate of diffusion of liquids is higher than that of solids. why?
acetone evaporates in normal room temp.why do we have two heat it to its boiling point?
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.
out of given four mixture, the one that appears clear and transparent is :
Which gas forms the liquid first as the air is cooled?
Calculate the mass of glucose and water required to make 250g of 25% solution of glucose.
The colour of starch solution is:
a) blue black
b) yellow brown
c) milky white
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
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
Classify the following into elements, compound and mixtures:
Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, water, chalk.
Which of the following shows Tyndall effect?
a.) lime juice
b.) tincture iodine
c.) starch solution
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?
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
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