 those are the results of the yesterday's test and of course as you already know green is the one which you have written correctly and red attempted but wrong right you can see lots of red patches there and you have that white one not attempted okay so I have also just collected statistics okay that green entire class attempted only 16.7 percent of the equations all the class together okay and red is 37 percent and unattempted white is 46 percent and most of you had two CRU courses right and you can see the first few side on your left side you have most of them are filled up either red or green that is okay but those are the very basic things that means that is the first one or two chapters of Levenspiel book if you have usually Levenspiel book right and you can see that line may be second row okay second row is the one which is maximum answered and also the fifth row this one this one and this one and two of course okay and you know question number one what is you know chemical reaction engineering question number two many people answered you know what is a reactor but even then they do not know what is a reactor after taking two courses you can see you know some red lines there right here question number two is this this this this there are still some few people who do not know what is a reactor after taking even two courses okay yeah and question number nine maximum answered can you guess what is that question it is not that is obvious it is heterogeneous single phase or multi phase that is all okay that is what is the maximum number of people written without any mistakes it is really funny you know that is the only question even type of reactors many people not type of reactor question number is you know six six is not that much six I think this is the six one still there are many red lines so and also of course I corrected when the entire answer is right not if they write only CSTR ideal reactors at this point of time you should know how many are there I say how many ideal reactors only three if you do not remember three after two course two courses okay then what kind of knowledge we have we have to check you know self that introspection okay you have to check yourself what is that we have learnt in those two courses right and another one which is very popular question was this fifth one this is the one this one also many greens can you guess that question I know you are happy to forget but I think you know at least can you remember that question where many people would have answered just guess sorry selectivity and all that is a disaster many people did not okay many people did not write that is zero almost conversion versus temperature for exothermic, endothermic reactions I think maybe one or two that is question number yes that is methods for analysis of and that is two I gave I accepted if you even if you write only two integral and differential you know another five are there yeah half life method is another one okay excessive method you know method of excesses that means you take one reactant more one reactant less that is another method okay and for reversible reaction you have to wait for long time and that is another method so there are so many other methods and simply by taking you know the what is that regression analysis that is another method all that no one has written okay but these two I have taken that is differential integral that is why it is maximum okay and these yeah here there are some green patches okay and this is the as I told you this is first one and two chapters of Levenspiel mainly the questions are from there and the definition of plug flow and mixed flow mixed flow almost everyone wrote but I did not because both I was looking for both for both I should get the correct answer okay and plug flow that is not your fault of course that is many many many teachers fault the definition of plug flow as axial mixing zero right and flat velocity profile that is not the correct definition the correct definition is something else and if you know that definition these things are automatically fulfilled like flat velocity profile and also axial mixing equal to zero radial mixing equal to how much you have infinite radial mixing axial mixing equal to zero and flat velocity profile so far all these there is a basic definition and if you know that definition all these things are automatic okay I will ask the question saying that if you if you have written that flat velocity profile is plug flow why it should be plug flow why why do why do why do why do you call that one as a plug flow and if it is radial mixing equal to infinity so what would you call that as a plug flow right so that is why the definition is not correct almost only two students I think one must be from ac tech and one must be from me Usmani University and both were my students who are teaching there okay they would have told that I think only two people have written that the definition so I think this is not your fault I mean this here I do not blame you for this definition because the teacher would have not even known that particular definition and as usual teacher would have simply told that yes assume flat velocity profile if you have or if you want to have plug flow or axial mixing equal to zero if you want to have plug flow but the real definition we will discuss sometime later when you come to the reactors so that is why I think a really disaster right you know teaching of C R E is not that easy right and also this comes at the end and surprisingly every chemical process starts with a reaction but we teach at the end end of all other courses right you first what is that material and energy balances then you go for thermodynamics fluid mechanics heat transfer mass transfer all that at the end only reaction engineering comes by the time you are tired probably you do not remember anything okay in two years itself you are tiring now it is so that is why I think probably you would have not concentrated and in the gate also I think not many questions will come correct because in India it is only examinations there is no education in India only examinations throughout the country and all your minds only go for how do you crack the examination how do you crack the question paper okay yeah so that is the reason why absolutely I do not know whether if I conduct the same similar questions or similar examination in mass transfer or heat transfer what kind of responses I get okay and I appreciate myself because none of you will appreciate me so I appreciate myself thinking that I have done a very good job of giving the test when you are not aware of the fact that I am going to conduct the test the moment you come to know that I am going to test you will know you will have a race that is why I like that movie you know three idiots okay where that funny word is given so they want to crack that word so that is why pull the papers pull your hair and pull your legs and all that you pull and then finally there is no answer there okay so the moment you come to know that is why gentleman agreement for you also next time you should not inform your juniors that this examination will be conducted so last ten years I have been requesting your seniors and I think they are faithful most of them may not be telling you about that that is why I never give this question paper I will only tell the questions okay I will never give you this question paper because the moment I have the question paper you will have a question bank in hostel then again you okay anyway this fellow conducts the first examination on the first day the 0th examination on the first day so now let us crack the examination cracking examination will not give me any idea now what I have to concentrate so this definitely tells me that I have to concentrate from 0 onwards okay so from basics again after two courses and I strongly believe that whatever is left with you in this examination whatever you could write whatever is left in your brain only you could write there so that is the true knowledge what you have see the you may you might all of you would have got you know here we have yes 10 out of 10 and in some other universities you may have no pure marks okay you would have got 100 out of 100 or 90 out of 100 or 99 out of 100 in CRE but all those marks are only on your mark sheets not here and mark sheet is always in your cupboard if all that knowledge with that 100 percent marks knowledge if it is in your brain then all that should have been beautiful green correct no the entire thing should have been beautiful green and it is disaster to just think about non isothermal reactors that is where the this red patches mainly these are all non isothermal reactors like for example non adiabatic non isothermal you thought that non adiabatic is different non isothermal is different because there was a comma I was asking about only one reactor what is the name of non isothermal non adiabatic okay we call in short in some books also it is written NENA non isothermal N I non adiabatic N A okay so that is the kind of name we give for one non isothermal reactor where of course temperature changes are there and heat also is you are supplying heat or removing heat not leaking heat and all that some people wrote leaking heat and all that either you supply or remove heat and naturally the temperature will change so adiabatic means you are not supplying anything so that is why it is called non adiabatic and also non isothermal because temperature varies depending on what kind of reaction inside the reactor from starting to the end if it is plug flow reactor or if it is mixed flow reactor will the temperature vary throughout the reactor it remains the same that is the beauty in definition of perfect mixing okay so that is why this every time this reveals me and you don't have to really worry all Indians are brothers and sisters this is the same pattern which I am seeing lost 15 years so our genes have not changed so we are all still Indians no problem so after taking two courses that is the result so I feel at least by taking this course and then there is another course called catalytic reaction this is chemical reactor theory if you take both the courses I think that entire field will be green and what kind of questions I asked are they difficult questions in fact many times I feel if someone else is outside they are all silly questions okay how do you analyze the data what is a chemical reactor okay and what is the information you get from kinetics what is the information you get from kinetics you get only one thing rate of reaction they are right you write rate of reaction plus rate constant plus order of reaction all these they are already there in reaction then what do you mean by you know order of reaction is a bad concept in your mind because many reactions do not have order of reaction always our imagination is only in terms of LKG because first time we teach oh first order and then solve all the problems so that is recorded in your brain all the time you will never grow beyond that and if you go to Haighon Watson models I asked what is the information you get from Haighon Watson model that is one of the questions not even one wrote the correct one okay maybe maybe one or two people you get only one rate expression that is all nothing else there okay rate expression for catalytic reactions where it is a very peculiar rate because you have in the denominator in the numerator something okay if it is simply a going to R reversible reaction just simply a going to R first order reaction and then this is taking place on the surface of a catalyst so it is a catalytic reaction then we have the steps of absorption desorption surface reaction all those steps if you take one of the steps as rate controlling then you get a rate equation called minus r A equal to some constant I am talking about numerator some constant into P A minus P R these are the either C A C A also you can put C A minus C R by some equilibrium constant divided by 1 plus k A P A k R P R okay or C R instead of P R so that is one what is the order of this particular reaction can you tell the order of particular reaction I think I will write that this is minus r A equal to k okay let me write C A so that you are comfortable with that some constant plus 1 plus k A P sorry C A plus k R C R if there are some units we can also write that is k I units concentration of units that is the one what is the order of this reaction you do not have an order for that it is a rate of reaction that is all so like that like you know Mohanot's kinetics you know the in biochemical engineering right that question also I asked bio reactor is it different from chemical reactor many people wrote you know they are different no both are exactly same both are exactly same absolutely there is no difference it is the same plug flow reactor you was you also use there same batch reactor you also use there same mixed flow reactor use there right and you also have a minus r A there what is that minus r A given by this micro organisms called Mohanot's equation if it is micro organisms or if it is enzymes it is Michaelis mental equation what is the order of Michaelis mental equation it is a complex form similar to this only so you cannot say that you know this is the order of reaction that is why that concept of order of reaction is totally wrong for us you are very lucky if you have a first order reaction that is one of the very very very very special cases it is not that you know every reaction should have first order right that is why you know very very basic questions like when I have A plus B going to R what is the order of this reaction you cannot say anything about that it is so innocently looking you know even simpler one is simply A going to R simply A going to R what is that order of that reaction we do not know it can it can be as complicated as this or if you are very lucky then it is only first order reaction provided there is a clause there if it is elementary reaction or how do you know it is elementary or non elementary reaction by looking at that it will never it will never tell you okay I am elementary reaction you take first order same thing are you telling me when I am looking I am so and so are you telling me you do not tell okay similarly there also reactions also will not tell so it is our duty to find out it is my duty to ask you okay what is your name so I cannot assume that because in because you have come to Tamil Nadu and then in Tamil Nadu most of the time you will have either supermanium supermanians or Srinivasans okay so then I cannot simply say that okay Srinivasan come here okay or if you I think in particularly Koriya it is beautiful 90 percent of the people are Kims K A M okay you can call Kim means hundred people will locate you on the road which Kim we do not know okay so like that I think we also have you know this kind of names particularly to some regions so because you are going on Mount Road here there is a place called Mount Road in Madras okay your general working you say Srinivasan means hundred people will look at you there are hundred Srinivasans there so we have to find out which Srinivasan you are finding out so similarly any rate of any stoichiometric equation you should find out what is the order of reaction without having in your mind that this is first order this is second order okay so that is why it is really really I mean I do not blame you but I think I do not know this knowledge we require a lot for C R E so that is why I have to now start from from the scratch and then with a clean you know slate okay everything is arranged now I think all your hard disk should be completely cleaned and now you have to have fresh but student does every time every semester he cleans his hard disk so that you know next semester is fresh that is what he would have happened here so where is the memory memory totally gone because you are erasing because you want to be fresh in the next semester so whatever C R E one you taught you know you have taken last semester you come with a very fresh face as if C R E 2 is the fresh again no connection between these two either mass transfer or mass transfer 2 okay so that is what would have happened here right and that concepts that concepts last question all reds and unattempted what is a concept I think it is very difficult to question to answer also right so that is why at least what are the two concepts you have learnt that is what I given the question minimum two concepts okay some people they have written you know ideal reactors ideal reactors is not concepts but the definition of ideal reactor is the concept for example plug flow is a beautiful concept it is really wonderful concepts I will tell you when we come to that why it is beautiful okay so that is that means you conceive something in your mind and then try to find out whether your idea is correct or not that is what what you do most of the time in research you see you see something and then you assume or you you hypothesize in your mind oh this must be happening right and you say that okay this is the idea I am conceiving this must be the concept okay so you have to know prove that what you imagined in your mind what you have conceived in your mind and what you have really found out both are same how do you find out that either theoretically by solving some equations by writing equations or experimentally or both then only your concept is right your hypothesis is right whatever you imagine that is what is research that is all you just look at some problem no one would have told anything about that problem no one would have addressed for example global warming is one of the problems and some people say there is no global warming simply the weather changes and some people say no no no it is clearly because of global warming we is right we have equal number of people entire planet is divided into two no some people say no some people say yes how do you find out as one of the researchers you imagine global warning means this everything is in our mind you imagine that okay global morning means this should happen this should happen this should happen so theory wise can I calculate and then show them that this is really happening or theory also many people will not believe that is why noble prizes also if you only produce theory there is no experimental verification they never get noble prizes there must be there are many beautiful theories that is what you know Higgs boson person he also he doesn't have noble prize Higgs boson recently they are starting you know it is a particle where that gives the shape to the world whatever we see the planets the solar systems and galaxies what we see now at least starts we will see the shape came because of that particle that is a theory theory is that you know if you believe big bang theory theory is that at the point of big bang there was no volume for that small volume for that small dot whatever whatever is there somewhere in the universe because of some condition this got exploded and what was there in that dot was it is pure energy it is a wonderful example for E equal to m c square we know how to convert mass into energy mass into energy take coal burn you get energy because I am taking mass but you don't know how to take this energy and convert into coal correct no you don't know so that is the reason why at that point of time all that pure energy that was there that has exploded and now it has to convert to mass then we don't know how to convert so that is why at that time who believed big bang theory so they started imagining and this Higgs told that there would have been a particle because at that time of that very big explosion right at that time of that explosion there are many many fundamental particles which have been formed all those are theoretical particles you know and some of them improved experimentally there are so many particles what is the leptons and also neutrinos are yeah bosons and bosons is one of these particles so like that there were many many fundamental particles so what he told is one of the particle would have converted or would have interacted with that energy field and then it would have converted to the shape which we are seeing now that means the molecules okay all the periodic table was been created at that time you know hydrogen and the next one next one next one next one like that okay so what is that he has done he has imagined in his mind how the explosion would have happened what kind of fundamental particles were there and one of the particle would have given the interaction between this energy field and then one of the particles responsible for the shape which we are seeing all that is the theory same thing in chemical engineering same problem in chemical engineering okay we know how to design distillation columns right one of the easiest designs and you design of distillation column is so beautiful I really like it because that is supposed to be a mass transfer equipment correct no there is mass exchange that means you are separating two components you know by only purely mass is separated there from higher volatiles lower volatiles and all that but you know any time are using a mass transfer equation there that is why chemical engineers I know earlier chemical engineers were really great wonderful methods they have done without even talking about mass transfer equation there is no diffusion nothing no equation at all what is the procedure you write the material balance you will get operating lines and then you go to thermodynamics what do you get but what does that finally give you for this procedure you will not give you a number of days equilibrium diagram thermodynamics will give you only equilibrium diagram so from thermodynamics simply take the equilibrium diagram okay if you are assuming even enthalpy you are not going it is the simplest case okay and then from energy balance from material balance you will get the operating lines correct no then in between you write number of chicks one chick equal to one stage so ten chicks means ten stages now you go to Murphy fellow and then say that okay Murphy efficiency and if it is 50 percent then you will become you will get twenty plates where is mass transfer coming there that is also bad for you that means you do not know what is really happening in the column but still you could decide if someone asks okay now explain to me what is distillation you cannot say that okay go to thermodynamics and get the equilibrium data and you know go to mass balance and then get operating lines and then draw chick chick chick you will get that is not distillation distillation phenomena is totally different so wonderful phenomena okay why the heavier molecules are moving one direction why the lighter molecules are moving in one direction why they have to go along the height of the column by the time you are going to the top you are getting only the pure lighter component and then by the time you come down and then see the bottom plate of course the number of plates and all this in our hand only so then you will get one of the purest bottom products and how what is really happening phenomena have you ever thought you are worried that time was whether this comes in the examination of that course yes for every old question paper has one distillation column design okay bug up and then at least draw 10 times then you will know 11th time in the examination you will write something you will be given some marks and then you get the degree that is what is happening there that is why I like the german system where every examination has yyosy examination every subject every subject has yyosy if I talk to you only then you will know how much knowledge either I have or you have writing examination will not give me any idea whether you have knowledge or not olden days yes 30 40 years back yes I mean if you have first class means definitely you know your subject okay but now even if you have 100 out of 100 you may not know definition of what is here I am not saying all like that but you know always statistics means more than 50 percent then we will say that many people do not know because of the system because we are not happy in learning something all our aim is to get a job not for the happiness of the knowing knowledge and I tell you if you have that real knowledge in any field whatever chosen field you have taken your happiness your confidence is totally different that is why you know most of the gods figures whatever religion it is they put a small circle behind his head right and that head will be glowing that hollow why it comes it comes only because of the knowledge if you also have all chemical engineering knowledge I can see that I can see that beautiful hollow marks behind your head I say oh what a wonderful chemical engineer I can really appreciate when you are walking on the road okay that is the kind of knowledge what we want to have but I think you know I am just telling all this in the first class this is only first class and next class also may be it is the attitude change because we have done till now without knowing anything just for preparing for examinations just preparing for examinations but now I tell you that there is a happiness in knowing knowledge and that knowledge there is no short cut it is just only through hard work okay and I wish this also should have been like in movie another movie you know I see movies and also I take a lot of examples from the movies I think how many of you seen matrix that is all it is a so beautiful movie I think unless you will not get great unless you see that movie and come here okay I think it is available in the hostel also it is a wonderful movie where I think it is a science fiction movie science fiction movies have lot of innovation that is why I like them innovation means something new avatar you have seen atleast ya many people have seen no there is one beautiful point I do not know whether you have observed that particular point that point is the pigtail of any person on that planet you will combine with ya okay either you know horse when they are riding or bird they are riding you know what is the meaning of that connection frequency matching becoming part of that like that today night you have to go to your room and then put your pigtail into CRE book okay and I think girls it is easy for you you have to find something ya then you will become part of CRE chemical reaction engineering then everything whatever is there in the book automatically comes to you that is what is also shown in a different way in matrix movie where I think the hero wants to learn kung fu right so then someone says that okay load kung fu to him like our CD how beautiful it is if that is possible really to load all that subject in your mind it is wonderful I should have liked CRE and also I should have liked thermodynamics okay load thermodynamics to me now and all the books that are available okay otherwise you have to become ya know another robo in that movie Shankar have taken that great movie great innovation again okay just reading okay any page any line any word he can tell how beautiful it could have been if all of us are like that wonderful no this question is not required this cross is not required by the way and I lose my job okay because it is not required simply because if I get my job only if I innovate something new see that is the kind of thing that is what is you know we have to show that interest in the subject and I told tell you it is very easy to waste time in any place and there are sufficient of your friends who are masters of wasting time okay they will simply even if you want to read in your room they will just pull your hand and then say that okay let us go up and take chai after chai we will start and when you come back after chai 2 o clock in the night you would have got it 8 o clock in the evening 2 o clock you come back then what do you learn because your body asks okay sleep now because we have a rhythm on this planet night time to sleep day time to work right yeah I mean this day and night came on this planet only to find food whole day and that was the original idea I think even now except humans all other species do the same thing only humans do many many bad things okay really correct no we have many monkeys that is why all these points I have mentioned in my welcome speech that day I think none of you would have remembered now okay I told even this you know Higgs bosons also all our faculty are Higgs bosons so please interact with them so that you will get some kind of mass better mass okay all this I told you on that day also right yeah if you look at our monkeys then what do they do they will always be searching for food after 6 o clock you do not see any monkey only monkey see us because we will be people who will be moving all the time throughout but monkeys will be sleeping or just you know on the trees they will be there right any species you take that is what is the idea right so that is why you know what happens is now I know you will very quickly go to that slot what is the slot when I ask you okay wherever you go okay so throughout night I have worked so day time I have not come here most of you are going to tell the same thing when you are doing your projects most of you which is a very very very bad habit you are not designed for night working and only watchmen why do you have watchmen we also do not need them because we are wrong people so to protect us I think there is another watchman that is all otherwise which monkey has a watchman or watch girl or watchman whatever okay yeah I mean which species have police which species have military all are wrong concepts you know so that is why if all of us are only searching for food on day time because this lecture will give me the food that is why I am doing this job so that is why you are searching for the job so that you will get the food and if there are sufficient number of forests sufficient number of trees you know where you get fruits and all that you do not have to job I think actually I am praying for that I think you know when without doing job whatever you want you can happily do if the food is available okay so because I think we are also capable of producing more and more human beings so that is also you know that is why global population is increasing and this is finite space globe has a finite space finite area so number of trees are limited number of forests are limited and we are going infinite way our population is increasing that is why this problem of rationing queues queue everywhere any ration shop you have queue again you tell me which monkey has you know this queues to get the food because that is nearest neighbors you know forest monkeys so that is why always you can tell that so if they want food they will go and search because we spoil them in fact if it is a forest with full of fruits very happy whenever it is hungry it will happily go eats a fruit and then happily sleep and of course that race started because of the reproduction so it will reproduce that is all any species only has to reproduce otherwise it does not have life one definition of life is that which is capable of reproducing its own species okay so that is why I request all of you to have that mind to learn not mind to crack the examination I know some of you would have asked about me whether this guy gives more assignments or less assignments I know definitely you would have asked right because for M.Tech students they do not have choice poor guys even if you are told that he gives a lot of work then you do not have choice it is a core course for you you have to take but MSPHD definitely will optimize who is the teacher who gives no assignments and who takes minimum number of classes may be 10 or 12 in a semester what do you learn if you have that mentality and I have I have many people here who have that mentality in our department but your seniors also will be happily telling this information to you no no do not go to him he will kill you he will give lot of work to you what is this I think if you have if you want to have knowledge you should do lot of work there is no other way of getting knowledge and what is the use of this knowledge your happiness not even job your happiness the moment you know that you know something you understood something your confidence your happiness inside it is the self happiness which is very very important at the end and most of us have forgotten about our own happiness we will only try to satisfy others mother brothers and for them only I know because even though you do not have any interest in coming to IIT your mother and father should have pushed you here literally brought you and then thrown here and gone there are some people I mean atleast 5 to 10 percent like that because your interest may be drawing painting or your interest may be playing something all that is gone right so that is why my request to all of you is only to find out your interest try to learn something whatever interest you have whatever subject you like that is very very important for all of us we will be happy you will be happy if you learnt that and the only one way to learn is work hard I am not asking you work hard alone in groups you learn much more you form some 3 4 people together okay and I know group copying but group discussion I have not seen in the hostel copy will do assignment and tomorrow morning you have to submit and throughout night that day that copy will be flying here and there okay same copy will be moving here and there copying copying copying and I think you know by copying who are you cheating you are not cheating me when I give the assignment and I ask you to solve without solving copying and if you give the assignment who are you cheating that is all yourself only and self-seating is very bad so that is what happens I know all of you even though I tell all these definitely you are going to do whatever I told not to do all of you because you are very busy somehow you do not know you will not have time to solve the problems when it is given you will wait till last day last day anyway you cannot solve then you can see for who has solved where you can copy that is what is going to happen but if you plan very well management of time is very very important for you okay this is after all you are not studying life long I say you are only studying I think once you come to IIT maximum is only 5 6 years if you do PhD if it is M Tech only 2 years minimum time required we do not have any degree less than 2 years we have a diploma for some other people specially for metro and all that that only recently we started other than that minimum time here to be on this campuses 2 years so in this 2 years what you learn and after 2 years you would have not you may not be even thinking of learning anything that is why at this point of time please try to learn as much as possible interest and I also tell you the mentality of the student is they will try to listen first and if they are not able to properly understand then secondary also they try may not be understanding to them then third day they will switch off the brain they will come to the class sit down they will laugh when I put a joke but still nothing is going to their minds so that is why whenever you have doubt if you are not able to understand better immediately to ask doubt and all the teachers will be very happy to clear doubt when and then and there you do not have to wait even end of the class but I know you do not ask the doubts why you think that other people will laugh at you you think that other people will think that okay you are now trying to butter me or try to satisfy me try to be friendly with me with the teacher me means here so that is what other people think let them think because if you have a genuine doubt genuine if you do not have genuine understanding then definitely you have to ask that is why questions should be put in fact we learn a lot because of your questions okay so that is why these things and another thing also I want to tell you is even though I think you know technologically we are progressing very well everyone has a cell phone everyone has TVs and I think even satellites also may come to everyone later even though we are advancing so fast but still our communication skills have not improved so fast this SMS is spoiling all our communications because there is no word you means only you you put R means only single R you put no comma okay no words then if you write some people are writing the same thing in the question papers also because they do not know I mean they do not know any other language except SMS language because before he was born this cell phone was ready with him mother and father will be happy to give them cell phones safety wise so those people will use only for this right so that is why communication is very important and one way to learn on this campus is you have to take a oath that you should not speak in your mother tongue as long as you are here mother tongue only for mother all other people you have to talk only in English right now forget about Hindi national language and all that because ultimately that is the only language where we are communicating if all our medium of instruction is Hindi and also I am talking Hindi then fine I mean that language at least like Germany they talk only in German they are not English and Japan they talk only in Japanese Chinese they talk only in Chinese but in India only we do not have that knowledge is still not come all the degrees are in English and many people not able to write their questions properly and of course thesis is a disaster that is why you have to communicate now I think that is why we are very seriously thinking to have communication courses even for MS PhD scholars technical skills and all that technical writing skills communication skills right so we are seriously thinking I think with your batch I think may be today or tomorrow I will send this circular to all as in academic research to all HODs to identify we have this less communication skills and then we will arrange a course for them separately may be 2 weeks 3 weeks like that so that is why one way to communicate in English is that do not talk in your own mother tongue particularly I am telling people from Andhra because that fraction is more here and second largest fraction I think is Hindi okay so please do not talk you know you talk only in English then I think you learn something definitively okay that is very important you are not able to communicate you do not know what to tell if you want to talk to me on some point why that is one thing which you can improve it will definitely improve if you are every day conversing with your friends it will definitely improve many people we have seen in fact 10 15 years back I think this you know that one particular or two particular languages were not there all of them were beautifully communicating in English okay in the hostels but now you go I think a lot of places in hostels when you walk you here either Telugu or Hindi and occasionally he Tamil also because there are some few people are there but we should listen only in English then only your communication will improve please really listen to me when I am taking you know when I am telling all this this is very important for you and you will be a different person if you take all my suggestions you will be a different person by the time you leave another thing is maintain timings one general thumb rule for your self-discipline is that there is any class for example 8 o clock class try to be there at 8 5 you need lot of discipline to do that if there is a meeting where you have to attend okay that meeting let us say 3 o clock try to be there at 255 it is not that easy you know the way I am telling it is very difficult to do that determine yourself that okay I want to be there 5 minutes before whatever event I am going to attend either class even movie also try to be 5 minutes before that will tell you whether you are disciplined or not first of all even for mess mess is opened at 6 30 means try to be there at 6 25 you need lot of planning if you want to be there at 6 25 when you have to get up how much time it takes for both how much time it takes again you know to dress how much time it takes again to walk from your room to hostel all that will automatically come planning so that is why that discipline unless you back calculate all that I think it is not possible or the moment you think that okay 15 minutes no problem even if I am late then you do not have any planning absolutely you need not have any planning at all so that is another very important thing try to be there just 5 minutes before whatever happens even earthquake comes you have to jump that you know crack and then you have to come and sit before breakfast that is the kind of discipline when you have then automatically you will reach very very great heights believe me you really I have seen many people who have that kind of discipline particularly with timings and those are the really great people I have seen somehow they would like to come 5 minutes before whatever they want even at 60th year or 65th year or 70th year and that only comes from our self-discipline so this learning and getting happiness when you are learning and the self-discipline and also these communications you know not speaking in your mother tongue I think mother tongue is there as you already know your mother tongue I think at least try to learn some other language and where this is a communicative language where you cannot escape that if you go for interview can you escape that if you are presenting your work before the committee for project or for any problem or you know many courses also have these presentations in the class you have to take a paper and then present so can you escape all this can you tell that okay I will now tell in my mother tongue you cannot tell that it is not allowed whatever you say even I think still it is only English we are having in the academic institutions so that is why to master that one simplest way is only to go for talking in that language all the time please try that I know you will be comfortable in your own language but even if it is right or wrong try to speak doesn't matter I think slowly you will understand okay so then I think with this is only as I told you mind changing course attitude changing so I hope at least few of you I don't expect 100 percent of you will listen to me okay because I think always there is a virus anywhere the only thing I have to see is that virus should not spoil the other people right but you know you will not but at least 50 percent 60 percent of the people change really I think as a teacher I have done my great duty there so what we try to do in the next class is as I told you I have to start from the beginning what is the beginning what do you think is beginning in CRE what is CRE okay one step before that I go I will ask a question what is chemical engineering it may be funny to ask you that question now but it is not really funny when I give that question what is chemical engineering and that could have been all read I have thought only with what is chemical reaction if another question was there before that what is chemical engineering how many of you can really define what is chemical engineering I don't know how many of you really remember that so we do things like that without knowing what we are we do things and suppose you imagine that you know your brother or sister is asking okay what is chemical engineering you will try to give some nice funny answer and then you forget but it will not hurt you that really that I am not able to explain to you what is chemical engineering it is a chemical reaction engineering if you are not able to explain to them properly will it not hurt you definitely it will hurt us but normally what we do is the moment the question is asked definitely we will get hurt but in one second or may be one fraction of a second we feel bad and then try to forget ego egoism comes and dominates you ask something I told something but really that plane that my god I could not really understand I could not really tell that what is the no that poor fellow will believe whatever you say if you say that chemical engineering means I will sit down and listen in the class you will believe okay that is the definition of chemical engineering for you okay so he will listen but I think he may go he may be satisfied also I will also become a chemical engineer because I can also go and sit in the class and listen to them that is all but it is not that who is deceiving whom are we deceiving him or who before that we deceived ourselves that is why I think all these things before starting the class very important that is why tomorrow I will write some 5 6 questions and that answers will give you the overall picture of what is that you are doing in chemical engineering and then reactors will be automatically a part of that and now we focus on that particular part like you know Google earth you have know so what do you focus first of all Google earth then if you want to Chennai zoom and then Chennai or IIT Madras or this class room also that is what what we do I will just give you overall view of what is chemical engineering then zoom to finally chemical reaction engineering and in that again reactors because this is mainly this course is mainly dealing with reactors and basics of chemical reaction engineering next course will be real applications wonderful applications will come all kinds of reactors shall we stop here okay thank you for listening to me but please remember tomorrow I will ask again some of these things what I told in the last class you cannot clean your hot disk now and then okay now let me clean tomorrow morning I will be fresh we have Thursday 10 o clock or 11 o clock Thursday 11 o clock we will meet again here then we will start that what is chemical engineering okay thank you