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how can you seperate two immiscible liquids ?
state some examples of diffusion in solid, gases, liquid
What will happen to the melting point of ice if some common salt is added to it? Why?
is air a mixture or compound? give 3 reasons.
what is crystallization?
(d) Blood is a compound and sea water is a mixture
(a) How can we separate a mixture of two miscible liquids ?
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.
Kinetic energy of particles of water in three vessels A,B,C are EA,EB and EC respectively and EAEB EC.Arrange the temperature TA,TB and TCof water in three vessels in increasing order.
What is the dispersed phase and the dispersion medium in milk?
(d) Sol is a liquid-solid colloid and Gel is a solid-liquid colloid
why is crystallization technique better than evaporation
Is growth ofbody (human) a physical change or a chemical change?
why do liquids flow ? Explain .
the spaces between the constituent particles are maximum in gases
State three reasons why you think air is a mixture and water is a compound.
Differentiate between miscible and immiscible liquids..
why iron sulphide is a compound and not a mixture?
difference between aqueous and non aqueous solutions?
define aerosol, emulsion, sol, gel
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
is muddy water a colloidal solution or a suspension ?
what is the difference between sol,gel and emulsion?
a growing tree is chemical or phycal change..??
melting of wax is a physical change whereas burning of candle is a chemical change why?
Is coal a mixture, element or compound?
does chalk powder dissolves in water if not why??
what are the uses of sublimation in daily life( any three uses)?
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)
draw a flow chart showing the separation of componets of air. Also, name this process?
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
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.
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....???
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
Q) Give one example for each of the following mixtures: i) Solid/solid (homogeneous),ii) Solid/solid (heterogeneous), iii) Liquid/liquid (homogeneous), iv) Liquid/liquid (heterogeneous), v) Gas/liquid (homogeneous)
explain why water is compound
The colour of starch solution is:
a) blue black
b) yellow brown
c) milky white
What are the uses of Centrifugation in daily life? (Pls. mention at least five examples)
Why is hydrogen considered as an element give two reasons
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
Rohit added small amount of common salt to water taken in a graduated cylinder, on dissolution there was no detectable change in the level of water. Explain why is it so?
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
whenb dilute sulphuric acid is added to zinc granules, it is observed that:
options: brown fumes evolve, .bubbles start coming out from the suraface of zinc granules, the reactions mixture truns blue, a yellow colour is formed
the rate of diffusion of liquids is higher than that of solids. why?
name the process by which common salt is obtained from sea water.
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.
it is desired to prepare 500 g 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 1 g mL-1.
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
When sodium hydroxide is added to ferric chloride solution,a reddish brown precipitate is formed.The precipitate is separated from the mixture by the process of
A)Evaporation B)Sublimation C)Filtration D)Fractional Distillation
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 you distinguish between a salt solution and a pure liquid without tasting it?
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?
is copper sulphate solution a colloid , solution or a suspension?
how will u separate common salt ,sulphur powder n sand from their mixture
identify solute and solvent in 80% of solution in ethyl alcohol with water
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