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how can you seperate two immiscible liquids ?
state some examples of diffusion in solid, gases, liquid
Is coal a mixture, element or compound?
is air a mixture or compound? give 3 reasons.
(d) Sol is a liquid-solid colloid and Gel is a solid-liquid colloid
what is crystallization?
(a) How can we separate a mixture of two miscible liquids ?
(d) Blood is a compound and sea water is a mixture
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.
Differentiate between miscible and immiscible liquids..
does chalk powder dissolves in water if not why??
difference between aqueous and non aqueous solutions?
is kerosene a pure substance
define aerosol, emulsion, sol, gel
What is chromatography? What are its various applications and underline the
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?
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?
a solution is prepared by dissolving 15 g of sodium chloride in 200g of water. what is mass by mass percentage of salt in this solution
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)?
draw a flow chart showing the separation of componets of air. Also, name this process?
is muddy water a colloidal solution or a suspension ?
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 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 DO U MEAN BY BULK PHENOMENON
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
Why is it not possible to distinguish particles of a solute from the particles of solvent in a true solution
define colloidal solution....???
1) Calculate the ratio of momentum, when
Velocity of an object is doubled
Mass of an object is halved
Both mass and velocity are increased by three times
rate of evaporation of aqueous solution decreases with increases in humidity?why.
a growing tree is chemical or phycal change..??
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
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
Is growth ofbody (human) a physical change or a chemical change?
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
What is the difference in apparatus used for distillation and fractional distillation ?
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
what is the solute and solvent in brass
list some more solid solution with theri solvent & solute
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
What volume of ethyl alcohol and water must be mixed together to prepare 250 ml of 60% volume by volume solution of alcohol in water.
the rate of diffusion of liquids is higher than that of solids. why?
why iron sulphide is a compound and not a mixture?
name the process by which common salt is obtained from sea water.
Out of a colloid, solution and a suspension
which one has sthe smallest particles
which one has the largest particles
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.
Calculate the mass of water and mass of glucose required to make 250g of 40% solution of glucose??
pls answer as soon as possible!!!!!!!
Sodium metal is a pure substance and so is Sodium chloride, in spite of the fact that Sodium chloride contains two different elements. Explain.
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.
A mixture is prepared by mixing two liquids A and B. Which property will be used to seperate them by the process of distillation?
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?
a piece of metal is dropped in cold water, the water slowly becomes turbid and effervescence is observed. What will you observe, if the blue litmus paper is dipped into the turbid water? identify the metal and justify the observation.
Pls give the answer quickly please i have test day after tomorrow.
Experts pls help.
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.
How can we separate a mixture of two miscible liquids? Explain and also write the name of method?
charge of one electron is 1.6022 * 10^-19 coulomb. what is the total charge on 1 mole of electron?if there is same amountof charge on one proton, calculate total charge on 1 mole of protons.
how will u separate common salt ,sulphur powder n sand from their mixture
Mention the three different ways in which insect pest can attack the plant. Mention the preventive and control measures that need to be taken before storing the agriculture produce.
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