 Okay so first question is in front of you please mute your mic okay okay very few have of you have answered this okay so so first question so can you add more time okay fine fine it's it's more than enough time for the next questions we'll will discuss we'll have the next question we will see there okay fine so first question was okay we'll come to the first question again don't worry we'll come to the first question go to discuss first we are going to the next question and ansul was the fastest to answer this question we will discuss first question later on i'm moving to the next one so okay anush anush okay sorry so the second question reads as size of a colloidal particles usually lies in the range what is the range of the particle size size of a colloidal particles you have 50 seconds left okay 51 seconds left it's not a less time i want to say so you take your time and answer this question properly size of colloidal particles usually lies in the range colloidal particles there are three types of solutions you know there are three types of mixture one is the solution one is the suspension and one is the colloidal solution no worries we will discuss if you don't know the answer we will discuss it okay so last seven seconds size of a colloidal particle like a milk milk what is the size of particles of milk okay fine so it's okay fine so we are going to discuss these questions so questions question was like size of a colloidal particles they have asked i want to explain this question like see if you what is the colloidal particle size there are three particles it's okay fine if you don't know this we have we are going to learn now it's not an issue what is the colloidal there is a three things what are the three things one is the solution true solution one is the colloidal solution these are the mixtures and one is the suspension okay one is the suspension colloidal solution true solution particle sizes one micrometer one nanometer one micrometer to one nanometer this is the particle size of the true solution okay can you hear me all of you and for the colloidal solution one micrometer okay sorry for the true solution less than one nanometer less than one nanometer one nanometer i will tell you how much it is can anyone tell me what how much one nanometer is one nanometer is how much 10 to the power minus nine meters yes so one less than one nanometer is the size of the solution particles what is the particle size for colloidal solution one micrometer to one nanometer micro you know it's a 10 to the power minus six whenever you see the micro is 10 to power minus six meter to 10 to the power minus nine meter this is the diameter of the particles and the suspension particle is greater okay it is the greater than what one micrometer size greater than one micrometer so what is the size range you know suspension okay if i ask you which is the biggest particle among these three which is the biggest particle among these three suspension suspension particles so the answer will be okay they have given in centimeters so if you convert it into centimeters that's why i told you you need to do calculation also this is 10 to the power minus nine meter if you write in centimeter 10 to the power minus nine into 100 that is 10 to the power minus seven centimeter so less than 10 to the power minus seven centimeter is the solution but they have asked for colloid 10 to the power minus nine six into 100 to 10 to the power minus nine into So, this is 10 to the power minus 4 minus 4 to 10 to the power minus 7 meter. In the option they have given 10 to the power minus 5 to 10 to the power minus 7, so this is the answer because 10 to the power minus 5 come in this range. Is it clear to all of you? Is it clear? Please don't discuss anything else. Okay fine. Moving to the next question. Okay, get ready for next question. Pranav, I and R. Okay, good. Good going students. Now, the next question. Okay, Pranav is the fastest. Oh, Arthur is the fastest. Okay, moving to the next question. Get ready for that. Take your time because the question will be built. So, you need to spend time properly in the question. In which of the following conditions? The distance between the molecules of hydrogen gas would increase. Increase pressure on hydrogen contained in a closed container. Some hydrogen gas leaking out of the container. Increasing the volume of container of hydrogen gas. Adding more hydrogen gas to the container without increasing the volume of container. You have one minute left. Take your time. Don't worry about the time. They have asked the molecules distance in a matter. And you all know there are the two important factors which decides the distance between the molecules. That is pressure and temperature. And question is related to that only. Okay. So, Sana is typing. It's a very easy. Fine. I think 72 have already answered. And you have 30 minutes left. 30 seconds left. Okay. Okay. Fine. So, How the pressure is related to the molecules distance. Everyone has voted and the answer is C. Still few students have made the mistake. Okay. We will discuss why you people made the mistake in this question. So, question reads as What is the which of the following condition distance of molecules of hydrogen would increase Increasing pressure will decrease the distance. Hydrogen leaking out will increase the distance because some hydrogen will go out. Increasing the volume of container. Hydrogen gas will definitely distance will increase because particle have more space to roam around. And the last is adding more hydrogen gas. No. No. If someone is there. If more hydrogen will be added and if volume of the container remain same particle will come more and more closer. So, answer will be C. 2 and 3. Any doubt? Please let me know. If anyone has any doubt. Nope. Very good. Moving to the next question. First we will see the leaderboard. You just have read the options for this one. Okay. So, now The next. Okay. Who is the In the top of the list. Okay. Pranav. Next question is in front of you. Okay. Read question properly. There is a match the column. Liquid matter. Take your time. It's a one and half minute you have. Liquid matter. Sublime substance or sublimable substance. Metallic crystal. Number of state of matter. SI unit of temperature. You have to match all of these with the Options given 1,2,3,4. 1,2,3,4 represent AVCD. 1,2,3,4. Then the options represent AVCD. Means in your unit to Select that. So if your answer according to is 1 So select A. If it is 2, select B. If it is 3, select C. Take your time. See the options properly. Write them. Just write like A corresponds. Let's say liquid metal is Let's say something. In the option let's say it has R. So write A for A it is R. Okay. There is no option for A is R. Sorry. I don't know about the answer. Okay. Fine. So misclicked. Why misclicked? You people try to do it fast Without reading the option. Why? Point too small. I told you now. Am I not audible to you? I read the question. Liquid metal. Sublime substance. Metallic crystal. Number of state. And SI unit. Heat and electricity. Okay. I read the question. You could have listened to me carefully. And 52 students Have answered it properly. Very good students. So answer will be Sublime substance. If you remember. Okay. What is the sublime substance? Anyone? What sublime substance Was there in the question? Who can answer? Camper. Very good. Where else? What else? Sublime substance is over And then you have the options of What else? Okay. Anyone has any doubt In the question? First let me know. Then I will discuss. Otherwise I will skip. Okay. So you people Have doubt in this. Okay. Just give me one second. I will explain the question to you. Just one minute. No doubt. You can move on. Okay. Okay. Someone has written that She has doubt. Who has doubt? Please don't write. Someone has Doubt. Please write your name. Who has doubt? Okay. I am showing question. No one has. Someone has written. So no one has. Okay. Fine. I remember one has written Yes. Okay. No problem. But if he understood now. Then it's fine. Moving to the next question Is Okay. Fine. So next question is Okay. So this is the score And Pranav is leading still. Okay. Now until SSR is Srijan is fastest Among others. Okay. Fine. So now we are going to do the next Question. Get ready for that. Pick your time And answer. You have enough time. You will have 90 seconds To answer. Liquid solid Plasma Bose Einstein condensate Liquid solid plasma Bose Einstein condensate Is in column 1 In column 2 Definite shape, definite volume Super low density Super energetic Super low density, super low energetic These questions you are going to get These type of questions in NTSC exams So You should have the clarity like what type of questions are asked. Liquid solid plasma Bose Einstein condensate in column 1 And Definite shape, definite volume Super low density, super energetic Is there in the Column 2 Sir question 2 and 3 They both are the same Question 2 and 3 both are the same Why? No Okay. Fine. We will see Question number 3 Options 2 and 3 are the same Okay. No problem. You select the correct one You select the correct one Do you think that Option 2 and 3 is the answer Then select it Anyone of them you will get the Okay. 70 of you Have answered right. Very good student Answer is B So question Answer is B Anyone has doubt Because very few have answered wrong So Anyone has doubt please write the message Please type in Okay. Please don't write no If anyone has just write why so that I will No one has Fine. Moving to the next question Okay. Let's see who is the fastest among you In answering this question Okay. So Abhishek is the fastest one And Pranav is still leading Okay. No problem. We are moving to The next question And next question reads like Missible mixtures Of liquids is in column 1 Cutting of Tree is in column 2 Soda water is in column 3 Hydrochloric acid is in column 4 Methane is in column 5 Sorry Missible liquids is in the column 1 A cutting of the tree is B Soda water is C Hydrochloric acid B Methane E In column 2 Homogeneous mixture P Pure substance Q Fractional distillation R Compound S Physical change T Take your kind Mark properly Question is good But you need to check each and every option Then answer Yes So please Which Which corresponds Which A corresponds to P Just write that And find the answer So you have last 20 seconds I think most of you have already answered For this question And 67 students Have answered You are still not answered Please answer it fast And Okay Now time's up And we will see how many of you have answered it Properly 14 48 students have answered C And that is the correct one Rest of you have made the mistake We will discuss this question Because many of you have not answered it Properly So the question is Missible mixture Missible mixture of liquid Is what Whenever you use the fractional distillation Fractional distillation Is only used when you separate the liquids Which are missible Like water and alcohol If you have this type of liquid And you want to separate You use fractional distillation Okay if I want to ask you Where do you use distillation Who can answer Where do you use distillation Where do you use distillation Please Please write your answer Purification of water Purification is water is fine Like what is the criteria for a substance Let's say there is a A plus B A plus B substance is there And you want to purify You want to separate A And you want to separate B Separating them by the Difference in the boiling point Very good Difference in the boiling point is higher We use Normal distillation If difference in the boiling point is less We use fractional distillation Distillation is generally used For solid liquid mixture Generally I am using the word Solid liquid because their boiling point Difference is very high This is generally used for liquid Liquid mixture Okay the second option Second option which you had Is cutting of trees Cutting of trees is physical change Soda water Soda water is a solution So pure substance No homogeneous mixture Soda water is a homogeneous mixture Hydrochloric acid HCl HCl is a If you see HCl What is it HCl is pure substance Pure substance because no other thing is there Only HCl Pure substance definition is When nothing No extra or impurities present is a pure substance Okay methane Methane is nothing but CH4 It is a compound Methane is a compound Compound is a Combination of different elements Is known as compound I want to ask you one question Does this methane has a property of carbon and hydrogen Please answer it by saying Y or N Does CH4 Has a property of carbon and hydrogen Does CH4 Has a property of carbon and hydrogen Okay Fine Many of you are wrong CH4 is not having a property Of carbon and hydrogen It is not having Just take an example If I take example of water If it is the same kind of example Water It has a property of hydrogen and oxygen Hydrogen and oxygen Both are combustible gases But water is used for extinguishing fire So This means that compound is Compound is not having Properties of the elements From which it is formed Is it clear to all of you Those who have written Yes CH4 is not having property of hydrogen and carbon It has different properties Okay Moving to the next question Any doubt first tell me Do you have any doubt in this No Okay fine If anyone has any doubt You can speak up If I miss by chance If I miss your message in this So you can speak in between Okay fine So next is Get ready for the Okay Pranav got Plus 741 And Vihan is Just okay fine Jagrav is the fastest very good jagrav So fine next Question is Next question is one of you 90 seconds Again take your time Answer it properly Column 1 column 2 Degree Celsius Centimeter Column 1 I am reading Degree Celsius Centimeter Gram per centimeter cube D bar Bar E milligram Moving to the column 2 Kilogram Pascal Meter Kilogram per meter cube Kilogram per meter cube So take your time and answer I will read the question again For you Column 1 and Column 2 are the This is easy Yes I know So I think I am not going to discuss this question So answer it properly And get 100% Like I want All of you to be in the correct answer All of you Mark the correct answer So let's see how many of you are going to mark it correct Yes So the units you need to check The units given in the right hand side Okay Okay fine I thought there is a trap So I took 20 seconds Okay no problem it's better You thought like that Vedan Because you don't know which question Has which trick So you first read The question and then answer that Okay so I think this time I am going to get Okay what is the answer Still 6 Still nice 15 student has made the mistake Okay so It's a very easy question I am just reading the answer I am not going to take you the page and discuss Degree Celsius is the Kelvin Because both are the Units of temperature Centimeter is a Kind of a CGS unit Of a length Meter is the SI unit for length Meter and centimeter should be matched Gram per centimeter cube Gram is Gram is like a mass Unit of mass so you will write the kilogram Per centimeter cube means The meter cube centimeter Will be matched with the meter cube There is one thing which can confuse you That is the D option bar Bar is the unit of pressure And pressure is also represented By Pascal And last option is the milligram When there is a milligram The answer is Corresponding to milligram You have to mark kilogram So I think most of you Understood the point behind the question We are going to see Okay anyone has any doubt please let me know In the chat box Okay Fine So Now the fastest is Ashish Moving to the next question Get ready for that Okay please don't discuss anything else Question is evaporation Okay column 1 Evaporation sponge Spreading of virus On sneezing Fusion Boiling Evaporation sponge Spreading of virus on sneezing Fusion boiling In column 2 Solid Diffusion Liquid into vapor Above room temperature As option is Liquid into vapor Nothing mentioned about room temperature T is the melting T is the melting 30 students have answered This time I think you are thinking and then you are going to answer Very good students Take your time and answer Evaporation Sponge Spreading of virus on Okay you have to select the best option Don't get confused I am telling you each A and B and C and D All are corresponding to one of the options So You have to select the best answer You may argue after that Sir okay this also represents this But you have to select the best answer Okay fine So So answer is B And 40 of you have answered it Properly Okay fine we will discuss this question So question is like Which among the following Okay you had so many options there Now I am going to discuss one by one option You have the evaporation First option was Evaporation So if you see the evaporation option Evaporation corresponding To the liquid into Vapor Parun mute your mic Liquid into vapor Okay Okay Now this is the liquid into vapor Now if you go to the Sponge Sponge is nothing but it is a solid That is the best answer Spreading of virus on sneezing Is the diffusion Spreading viruses Diffusion Okay and Fusion I told you many of you have doubt Is it a nuclear fusion No Fusion is also a kind of a melting Whenever melting happens we use the word fusion It represents melting Yes And last one is the boiling Boiling always happens when liquid Into vapor About room temperature About room temperature I think it is clear to all of you If anyone has any doubt Please ask me now only Do you have any doubt Please don't discuss Anything else if you have doubt please ask No doubt okay fine We are moving to the next question Get ready for that We will see who is leading now Okay Monisha came to second position Very good Monisha oh sorry She was there Jagrav NPSHSR is leading Very good Jagrav And it is coming fast to the top Position and Pranav has maintained His position very good let's see In the next question what will happen And the next question Is in front of you 9th question Iodine is there iron And sulphur column 1 Iodine iron plus Sulphur Sea water Pure water Ice plus common salt This are the column 1 Column 2 Temperature below 0 degree celsius 100 degree celsius boiling point Sublimation Mixture of 2 elements Boiling point greater than 100 degree celsius Again I am repeating Very good this time you are taking time To get the answer A option Iodine B option A is Iodine B is iron plus sulphur C is sea water B is pure water E is ice plus common salt Moving to the P part Temperature below 0 degree celsius 100 degree celsius boiling point Sublimation Mixture of 2 liquids Boiling point greater than 100 degree celsius 54 students have answered Very good now we will see How many of you have done this question Right? Question is very easy but you need to spend time You need to check the options properly You should not make mistake in this question Okay Shivam what happened why you are unable to Answer Okay time's up And the answer For this question is A And 45 students have marked it properly You have still made the mistake For them I am reading the answer First is the Iodine given Okay So those have marked it wrong For them I want to tell if you see The options given to you Okay So options given to you is Iodine One is Iodine Iodine is nothing but Iodine corresponds to Sublimation Sublimation What happened Sir the font is too small We are kind of stressing our eyes So I I told you everything You should have listened to me Iodine is sublimation You could have told me there also Like Okay fine so listen to me Whenever you have this type of question Where the question is big and you need to answer You can speak So Iodine is sublimation Okay next Iron plus sulphur Iron plus sulphur you can understand Both are solid and it is nothing but Mixer of two elements Mixer of two elements sulphur exist in nature as S8 So it is mixture of elements Mixer of Elements Okay next is Sea water Okay now this is very very important Is nothing but Boiling point is greater Than 100 degree Celsius You know whenever you make the salt water The boiling point increases Whenever you mix the water with the salt The boiling point increases Because this is salt is acting as An impurity On adding impurity into water The boiling point increases little bit So boiling point is Yes You have the Sea water Corresponding to boiling point greater than 100 degree Celsius Then the pure water Pure water you all know is a It is 100 degree Celsius is the boiling point And the last one is Ice plus common salt You know ice plus common salt is very very Important example The fishermen use this Ice plus they put ice and common salt So that Temperate you know the Melting point decrease Temperature below 0 degree Celsius What do you mean by this You can keep the ice below 0 degree Celsius Or you can say that The melting point decreases a lot In that case When you put ice and salt water Common salt so what happens When you put ice and common salt You can preserve the fish For the longer time So it Answer is temperature below 0 degree Celsius Okay anyone has any doubt Please ask Let me know if you have any doubt Okay I am speaking too fast Okay fine fine fine So see Okay I will explain it again Sir no doubt sir can you please move on to the next one Okay wait wait wait How many of you have doubt in this How many of you have doubt in this Please write that Okay fine fine So next question is Next question is in front of you Now it is related to Okay first we will see the leader board And Okay jagra good Next Vian is the fastest We are moving to the next question Okay consider the following statement Water at room temperature Is liquid When the liquid is cooled Very quickly it always Form a crystal Atoms in a liquid or father Apart then the atoms in a gas Which of this statement is Are correct Okay very easy question Yes anyone has any doubt Fine So last 40 seconds You have consider the following statement Water at room temperature is liquid When liquid is cooled very quickly It always form a crystal Yes yes pizza party Okay I think most of you got the answer And it is the last 40 seconds Okay we will see the answer Of 10th question And answer is Okay there are mixed answers For 10th question Okay You know Most of you have You were saying it is easy but Most people have made the mistake So Fine we will see how to solve Question number 10 So In question number 10 The question reads as I am going to open question and we will talk to you Yes Okay between A and C I know that you You must have made the mistake between A and C So question is like Consider the following statement Water at room temperature is a liquid It is the correct thing So A is correct When liquid is cooled very quickly It always form a crystal It is not necessary who told you Okay what happens region any doubt Okay Okay you are saying to charge Fine now the next is Atoms in a liquid are further apart than Atoms in a gas No it is also wrong So answer is only A So C is the answer Why I gave this question so that You should not win the overconfidence Okay very easy question and mark it 32 people have made the mistake in this easy question So always read the options properly And then answer Okay Crystal formed Okay crystal forms when you Okay they have given water when already When always cooled with glass it will form crystal No Crystalization is a process when there is a salt present in the water When you cool down It is not necessary that Okay let's say You have the water and You are cooling it fast From the 100 degree Celsius to 50 degree Celsius It will not form the crystals It will not give you the ice in that case Is it clear They are given just the water Nothing else Okay fine So just see the leader board So Now this is the game changer I think Okay And Moving to the next question Please take your time And understand the question properly And then answer Question is Consider the following statement Like solid solubility of gases in liquid Also increases with increase in temperature Solid solubilities Of gases Like solids solubility of gases In liquids also increases With increase in temperature Mechanical stirring Increases the solubility All solutions are Mixtures but not all Mixtures are solution Which of this statement is Are correct You have to answer this question A, B, C, D options are in front of you Take your time You have 57 seconds Think properly Is there any case which can show the exception Then That will not be our answer Take your time and think So solubility you need to Just think about some cases How you check the solubility of gases In liquids Have you ever seen the gas mixed in a liquid And then think about that Okay Only 19 seconds left Think properly And write the answer Okay fine So we will see how many of you have done this question Write Oh wow that's a good Number A, B, C, D You have just marked like that Only 14 students have done this question Write So I like the curves which we obtained From this question We are going to discuss this question in detail So question is about the solubility Of gases Consider the following statements Okay I want to tell you one thing I want to tell one thing To all of you is See if you have Solids you know when you have a solid Is it a soluble in a liquid It is a soluble in liquid And what happens to solubility when you increase the temperature Let's say you have a sugar Let's say you have a sugar plus water When you add a sugar and water And you heat it If you increase the heat solubility Increases But it doesn't happen in the gas You know let's say oxygen is dissolved in water You know in dissolved When oxygen is dissolved in water Okay one student told me that I am Speaking very fast so this time I am going to speak slowly O2 plus water is in Let's say oxygen is in dissolved form With water Now what will happen on heating When you heat this Oxygen molecules will run very fast And the solubility Of oxygen in water Decreases You will write solubility Decreases If solubility decreases I want To give you one example You know the sea water In the summers There is a very high temperature on the surface Of water So solubility of oxygen Near the surface of water decreases That's why fishes Go deep inside the sea They don't remain near the surfaces Because the solubility Of oxygen decreases Amount of oxygen decreases So your fish will not go there Okay let's say this is fish It tries to go down So this is the situation So solubility of solid does not Increase this is the wrong answer Mechanical steering increases the solubility Yes yes When you stir something with your Mechanical way You will increase the solubility Yes this is the correct thing All solutions are mixtures But all mixtures are not solutions Try to understand this Solution When you say the word solution Definitely it came from mixture In starting only I told you Mixtures are divided in three categories One is the solution One is the suspension One is the suspension And one is the colloid So definitely All mixtures are solutions Now all solutions Sorry all solutions are mixtures But all mixtures are All solutions are mixtures But not all mixtures are solutions So it is right If there is a colloid We can't say it is a solution We can't say milk as a Those who would say I don't know About colloids are fine If there is a suspension Let's say you have a sand plus water When you mix sand and water When you mix sand and water It is not called a solution Few minutes back I told you Solution particle is very very small You can't see with your naked eyes Also not even with the microscope It is lesser than 10 to the power Minus 9 meter You can't see with the help of your Microscope So definitely all mix All mixtures are not solution So this is also wrong statement Okay So what they have asked which type Of statement is R correct So B and okay fine This is a right because it is same The same thing all solutions are mixtures But all mixtures are not solution Sorry this is right only Yes any doubt Please tell me any doubt No Okay good fine So now we are going to do the next question Get ready for that So this curve is very good I like this everyone Has made the mistake only 14 have done It's right okay we are moving To the next question get ready for that Okay Sorry I skipped the leaderboard But you can see the leaderboard After this question don't worry Latent heat of vaporization Is Four statements are given The statement properly definitely There will be some difference in the Statements Read it properly And then answer You have 90 seconds to answer Viva what happened Viva did you understand the last question Okay good If anyone has any issue you can Ask me later on also It's fine Please don't discuss anything other Than whatever we are discussing So if you have something related to question You can discuss Otherwise I will miss the important message Okay I honestly think I got wrong No problem Nitya Question number 12 Very very important Latent heat all of you have heard And you know about that You have given 2-3 papers In that you got the question of latent heat Okay Last 7 seconds Now time is up These students have marked it right And many of you have marked it wrong The question was very easy Latent heat of vaporization I want to tell you one thing Those who are marking it wrong You know latent heat of vaporization Is nothing but Okay just give me one second Latent heat of vaporization So You know when you define The latent heat of vaporization You define it like this When some liquid is there When some liquid is there It is going to gas Okay And let's say this is water only Water at 100 degree Celsius Okay water at 100 degree Celsius And this is steam at 100 degree Celsius Now you say that Latent is the that heat Which require to convert Liquid into gas At its boiling point At its boiling point Keeping the atmospheric pressure Very very important point At atmospheric pressure Only you can define latent heat of vaporization Not just latent heat of vaporization Latent heat of fusion also All are defined at atmospheric pressure Can anyone tell me why Why I am saying that Atmospheric pressure is the deciding factor Why You know when you change The pressure boiling point Also get changed Okay so it is always Required to write in the Atmospheric pressure You understood so answer was You I think you got the answer For the last question it should be Atmospheric pressure and boiling point Any doubt Please let me know If you have any doubt Okay fine so we will go and check The Leader board Okay Jagra is still leading And okay Vihar has Got the second position Who is this 497769 Okay You should write your name Fine We are moving to the next question And that is In front of you On the basis of following features Identify correct option This technique is used For purification of solid organic Compound It is based on difference in solubility Of a compound and impurities The organic compound As I told you we will Going to learn something new also You can relate it those who have Heard these things Like Separating funnels Crystalization distillation I think all of you must have heard this Which option fits best In separating organic compounds If you have a mixture Of organic compounds Okay Which of the following features Identify correct option So think about that What is the chromatography What is the separating funnel You must have seen the funnels So how we can use the separating funnel For separating organic compound Is it a logical Near And Crystalization Can we use the crystalization Because crystalization is forming the solid So can we use it In this case Okay Fine We will see the answer now And the answer is Fine 21 students answered correctly And more than Okay 24 Have We will discuss this question So now I want to tell you one thing You know the question was very easy And question reads like On the basis of Identify correct option Which technique we use To separate the Organic compounds Organic compounds Organic compounds Organic compounds A and B Try to understand this This is very very important If you have two organic compounds You know Separating funnel will definitely not the answer Why separating funnel is not the answer Separating funnel is only used When there is a immiscible liquids Organic compounds are miscible Both are organic like Dissolts like Like Dissolts Like So organic compound Dissolts organic compound So definitely they both are not immiscible So we are not going to use separating funnel We are not going to use separating funnel Okay fine Moving to the next Crystalization Crystalization is used when there is a Salt Crystalization is used when there is a salt And And some liquid let's say water When you have this Then you use the crystalization You heat it So something will evaporate Water will evaporate And then you can get the salt out of that Distillation we have already Discussed Distillation we have Already discussed Okay Distillation we have already discussed Because it is used for the liquids And solids whose boiling point is Very very high Boiling point difference is very high Now Last option left is the chromatography I want to tell you one thing about the chromatography That is very very important Chrometography You know you must have heard that Okay Jangi Please mute your mic Okay Chrometography is used When there are two substances Substance A and substance B You know you must have heard that If you take a ink You know the ink bottle which you have So let's say you have a blue colour ink So What are the things present in that Definitely blue colour only Yes or no Yes or no If there is a blue colour ink you have That will have blue pigments in that Yes or no If you have let's say blue ink Do you have the blue pigments Okay You don't have just blue There is a combination of 2-3 compounds Okay Today I am going to just go and Today you can this is a work for you Just search that chromatography Of ink In Google just search Chrometography of ink So when you separate the substance You have to know how many Different colours are there in the ink So it is very interesting to see the colourful Things in the In your chromatography paper Okay how it happens I want to tell you You add one liquid You add one liquid And in that liquid Let's say substance A is soluble Liquid substance A is soluble This is insoluble Substance B is insoluble Now what will happen When you put This chromatography paper And a drop of Mixer A and B And you put a drop of Mixer A and B And you let The liquid let's say C You let the liquid C And write write And write like liquid C Now what will happen this liquid C will rise up Yes or no When you dip into the water Water start rising Now what will happen When this will rise If I draw it like this When it rise You have A plus B And C is moving like this Okay one question I want to ask all of you One question I want all of you If A is Soluble in C After some point of time You will get the two dots You will get the two dots Can you tell me which dot represent A Which dot represent B Among these two Top one is representing A Or bottom one is representing A If A is soluble In liquid C Very good Very good Two students have answered what about others Top one will represent the A Top one will represent A Why it represent A Because A is more soluble So C will drag A more than B B B goes to this level only If I mark the levels also If I mark the levels B will go to the little B will go up to this height This is H1 But A will go to H2 That is more than H1 because A is more soluble So C will tell A is like a friend of C So they will hold hand together For longer time And as C rises A will also Rise to that much extent Did you understand So by this way By this way You can separate A and B A will be reported At the top And B will be reported at this end So by chromatography You can separate the Organic compounds Whose solubilities Are different in any liquid Very very important point And today you will search In google after going to this class You will search chromatography of ink You will get to know there are red Blue pink of beautiful colors You will see in the chromatography paper It is not just a blue ink Okay And it out Okay fine Now we are going to see the final result So Get ready for that And the result On the leader board is This Okay Jagrao Congratulations Jagrao Very good, I think last time also Okay You can check in the recording My family will find a way I am sorry guys for calling the phone Okay you understood this Anyone has any doubt Please feel free to ask me You can WhatsApp me also If you have any doubt Yes Okay thank you Congratulations Jagrao and all of you Those who have participated the most important thing is You should learn during the class That's it Okay thank you student Congratulations Jagrao Okay