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
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 ?
How can you distinguish between a salt solution and a pure liquid without tasting it?
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
Is growth ofbody (human) a physical change or a chemical change?
why do liquids flow ? Explain .
Is coal a mixture, element or compound?
State three reasons why you think air is a mixture and water is a compound.
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.
Differentiate between miscible and immiscible liquids..
(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?
difference between aqueous and non aqueous solutions?
define aerosol, emulsion, sol, gel
how many litres of a 5.0%(w/v) glucose solution would you take to obtain 75 g glucose
List out the difference between Solution,Suspension and Colloidal Sollution in all aspects.
5g of sugar is dissolved in 250 ml of solution.Calculate its mass % by volume
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?
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.
the spaces between the constituent particles are maximum in gases
what happens when a saturated solution is further heated???????????
what does a solution expressed as 3.5% mass by volume mean????????????
what is the dispersed phase, dispersing medium and type
1) ink , blood, paint
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?
explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance
a solution contains 24g of kcl and 510ml of water at 40ºc. calculate the concentration of kcl by mass percentage of the solution . density of water = 1g per ml
water is a compound not a mixture .justify it by giving two reasons
WHAT DO U MEAN BY BULK PHENOMENON
acetone evaporates in normal room temp.why do we have two heat it to its boiling point?
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.
Calculate the mass of water and mass of glucose required to make 250g of 40% solution of glucose??
pls answer as soon as possible!!!!!!!
what is the difference between true solution,suspension,colloidal sol ? I want detailed information
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?
does chalk powder dissolves in water if not why??
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
classify the following as element,compound and mixture: iron,sea water,milk
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.
Name the gas produced when a mixture of 7 g of iron filing and 4 g of sulphur powder is treated with dilute Sulphuric acid at room temperature ? What gas would be produced if the same mixture is first heated strongly, cooled and then treated with dilute Sulphuric acid ? State the causes of this difference in behaviour
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
with the help of labelled diagram describe an activity to separate a mixture containing ammoniun chloride and salt
is muddy water a colloidal solution or a suspension ?
a growing tree is chemical or phycal change..??
the rate of diffusion of liquids is higher than that of solids. why?
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.
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.
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 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.
on suffering from fever which will lower down your body temperature more ice or ice cold water ?why?
what mass of water must be added to 5g of Nacl to make 5% mass by mass percentage of the solution ?????????.............
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?
the quantity of sodium chloride dissolved in 100g of water at 310 K will be :
(a) more than 36g.
(b) less than 36g.
give reason for your answer.
pleaseee helpp !!!
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)