Select Board & Class
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
is air a mixture or compound? give 3 reasons.
(d) Blood is a compound and sea water is a mixture
what is crystallization?
(a) How can we separate a mixture of two miscible liquids ?
10 difference between 3 states of matter
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
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.
Is coal a mixture, element or compound?
What is the dispersed phase and the dispersion medium in milk?
Is growth ofbody (human) a physical change or a chemical change?
why is crystallization technique better than evaporation
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
why do liquids flow ? Explain .
The composition of which of the following does not change with temperature:
2. true solution
State three reasons why you think air is a mixture and water is a compound.
does chalk powder dissolves in water if not why??
Differentiate between miscible and immiscible liquids..
difference between aqueous and non aqueous solutions?
define aerosol, emulsion, sol, gel
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
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 is the difference between sol,gel and emulsion?
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..
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????????????
(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?
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?
How can you distinguish between a salt solution and a pure liquid without tasting it?
Is smoke homogeneous or heterogeneous
water is a compound not a mixture .justify it by giving two reasons
sea water is a solution, suspention or colloid?
WHAT DO U MEAN BY BULK PHENOMENON
what are the similarities and differences between evaporation and boiling ? (please give at least 5 points)
is kerosene a pure substance
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
a growing tree is chemical or phycal 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
Which of the following compounds when dissolved in water gives coloured solution ? (a) barium chloride (b) sugar solution (c) sodium chloride (d) copper sulphate
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
out of given four mixture, the one that appears clear and transparent is :
the rate of diffusion of liquids is higher than that of solids. why?
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.
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.
acetone evaporates in normal room temp.why do we have two heat it to its boiling point?
Which of the following shows Tyndall effect?
a.) lime juice
b.) tincture iodine
c.) starch solution
WHY DO OUR PALM FEEL COLD IF WE PUT SOME ACETONE OR PERFUME ON IT.?????
what is the dispersed phase, dispersing medium and type
1) ink , blood, paint
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?
Name two metals which become liquids slightly above room temperature.
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
Copyright © 2022 Aakash EduTech Pvt. Ltd. All rights reserved.
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)