PGIMER Chandigarh & PGIMS Rohtak 2026 | Complete Chemistry Rank Booster | Most Expected Concepts

[00:00:21]Hello aspirants of PGIS Rohtak and PGI Chandigarh, from today onwards, complete chemistry is being started for all of you children with concept and question practice.

[00:00:31]All of you children, never miss this session.

[00:00:34]This session is going to be very important.

[00:00:36]And yes, let me tell you one more thing, the batch that was going to be launched for NEET 2027 and JEE Mains 2027, search its first class today on @VeeraClasses YouTube channel. You will get it there. Now what will we teach in this entire session? So first of all we will give brief explanation of important concept of each chapter and along with that we will tell the children all the important formula of each concept first of all and while teaching we will tell the entire important concept and formula of the entire chapters, after that we will make them practice questions on that, children who have come for the first time on Mahadangal channel, please subscribe to the channel and like the session, children sir come, yes Tamanna I have come, sir I recognized you, I have recognized you, good afternoon, good afternoon come sir please my brother brother brother please I don't want to do it, friend please I do n't want to do it, Khushi I am fine I am fine Khushi how are you Khushi come on sir how are you now now I am fine now child I am fine now. Now you might be seeing that okay now it's really okay. Now in the current situation, you must have come to know from the front that now you can say that everything is 90% fine. But now the classes have started.

[00:01:42]Now your classes will run in perfect rhythm. I have only one request to you all that the children who come to the channel for the first time [nasal sound], please subscribe to the channel and make it reach all the children. Hrishikesh Babu has arrived. The style of coming of Rishikesh Babu is like this to me, yes Rishikesh Babu hello sir ji hello sir ji means hello Rishikesh Babu Jai Shri Ram Jai Shri Ram Rishikesh Babu Har Har Mahadev Har Har Mahadev Jai Mata Di Jai Mata Di Rishikesh Babu Jai Baba Jai ​​Say Shri Ganeshaya Namah Radhedhe Radhe-Radhe Rishikesh Babu Radhedhe now let's talk here, come on come on come on come on I am fine how are you feeling, I am fine, let's see and see, there is a lot of difference in being.

[00:02:24]Rishikesh Babu, you don't have to tell even this much truth.

[00:02:26]Sir, how will you teach the questions, from the perspective of the question or from the theory? Listen. It's my creation says, Sir, how will you teach? Come on kids, let me tell you how I will proceed in this journey of PGI Rohtak and PGI MER Chandigarh. I will explain the most important concept first [nasal sound].

[00:02:42]Important Concepts We will study these important concepts in detail. First of all, we will read the most important concept with formula. Like today also, first we will start with the concept and start from the beginning, from the zero level.

[00:02:56]After that, when this is completed, we will make you practice MCQ questions from here.

[00:03:00]Now you kids just wait sir you schedule everything will be done. all will be. There is just a little business till 12th July.

[00:03:13]Everything will be a little irregular till July 12. The reason is that AMRU CET exam has come in the middle of AMRU CET and he has to help these children a little bit, so time management is going a bit here and there but you guys do n't take tension, you guys don't take tension, isn't it, isn't it, Bua Sir, there is a lot of difference between seeing and being, is it like that Ramkishore Singh Ji, come on Sir, first get the theory concepts done, get them done at the end of every class, I am also saying the same thing that first of all I will teach important concepts with formulas, after that I will make you practice MCQs. Now from here I will just tell you children to study. Study, child. Today we will first start with the mole concept. First of all we will start with the mole concept.

[00:03:56]Look all the children, just see what all you have to study in the Mole concept. First of all we will teach you the mole concept. My brother, there is NCERT data which you have to remember. One data from NCERT that you have to remember. The zones have arrived. Hello Sir.

[00:04:08]Hello Anchal Sir, there will be a live class on Veera Class.

[00:04:11]Look, those classes will not be live without classes, you should go live, it will be a premiere like live, it will be a premiere and you will say sir why it will not be live, then I will take it live, children, right now there is a little time imbalance, there are a lot of things, a lot of work to be done, so whenever I am free, there may be one or two chapters, you will get it in recorded format there but you will get the feel, it is a live premiere, it will run exactly like live, it will run exactly like live, there will be a chat box there too, everything will be there, it is just a premiere, it has already been recorded, it has been uploaded. When the time comes, it will automatically start running like live. But I have to tell something to all of you. There is still a lot of work to do. There is an offline class. There is AMRUCET exam. There is an exam for PGI Chandigarh.

[00:04:53]After that the new batch for 2027 has been launched. I have to take classes in that. So for this reason, I am managing my time as per the time I get.

[00:04:59]As soon as these exams of 2000, 26 nursing and paramedical courses of each state are completed, then I will have proper time and then I will go and make all the classes live. Isn't it aunty? Now study for now. Sir, will the AMRBC nursing form not be released in 2026? Please wait Radha Som ji. Radha Som ji please wait. Don't be so sad. Radha Som ji good afternoon children. Good afternoon. The weight has become so much. I have seen it. I have seen it, friend.

[00:05:27]So look sir, don't mix it again. All three subjects [nasal sound] right away I will make separate playlists for all three subjects. I will create different playlists. Come on child, now study from here, Sir, class starts, okay, okay children, now let's start the class, Radha Som ji, you have been told that your form will come, now I will talk from here, the first thing that you have to remember in the mole concept, which is the NCERT data, you have to remember this thing, mass of one atom of carbon 12, mass of one atom of carbon 12, you have to remember its value, it is 1.9 * 10 to the power - 23 grams, my brother.

[00:06:12]You have to remember this. You children, write the value of mass of 1 atom of C12 correctly. So you write it correctly child. Write the value of mass of 1 atom of C12.

[00:06:19]So write the value of mass of one atom of C12 in the comment box. You have to remember this. This is going to be the basis of your mole concept. The base is about to be formed.

[00:06:28]This is going to be the base of your mole concept. The base is about to be formed. Please remember this.

[00:06:32]What do you have to remember? What is the mass of one atom of C12, Babu? 1.9 What Sir? This is one NCERT data, my brother. This is NCERT data. You will have to write in the comment box.

[00:06:41]This won't work. This wo n't work, Baba. You will have to write in the comment box. Write quickly. Write quickly, write quickly. Remember this brother. Remember, all the children will remember. Every child should remember this.

[00:07:00]Sir, what is the mass of 1 atom of C12? Sir, what is the mass of 1 atom of C12? This is it sir 1.9 * 10 to the power 1.9 * 10 to the power What is 1.9 * 10 to the power Aunty? 1.9 * 10 to the power is -23 grams. 1.9 * 10 to the power is -23 grams. Did you understand this? Did you understand this? Now look my brother. Now see, from here, if you remember this thing, then from here we will tell you the next concept of atomic mass unit. What is the next concept, Aunty? of atomic mass unit. You kids just keep watching.

[00:07:36]What is the next concept? of atomic mass unit. You call atomic mass unit amu in short. What is the atomic mass unit called? You say Amay in short. Did you understand this? This is it, sir. Now please brother, I will get everything done. Study. Now I will get everything read.

[00:07:52]Study quietly. From now on I am not going to see your comments anymore.

[00:07:57]Just the questions I ask should be answered.

[00:07:58]Now I have to teach my brother. Atomic Mass Unit.

[00:08:02]In today's times, the atomic mass unit has been given another name which is called unified mass. All children should answer.

[00:08:09]What else do you call the atomic mass unit? Unified Mass means you call it capital U. Both are the same thing. Now the question arises that what is atomic mass unit and unified mass? Let me tell you a story to explain this.

[00:08:19]Suppose you have your cousin brother, your own brother-sister, your own brother-sister, cousin brother-sister, maternal uncle's brother-sister i.e. your maternal uncle's son- daughter, your paternal uncle's son-daughter and your own brother-sister, let's say there are 12 brothers-sisters.

[00:08:30]How many? Total 12 brothers and sisters, total 12 brothers and sisters, now you have to learn here Keshav Radhe-Radhe Keshav, now your health has become good my brother, now you must be feeling from your appearance that your health has become perfect, so now your health has become perfect, let me start from here, listen, I told you that if all your brothers and sisters including cousins and you including your real brothers and sisters and including cousins, there are total 12 brothers and sisters and let's assume that your grandfather gave you a total of ₹72, he gave ₹72 and said to distribute it equally among each brother and sister.

[00:08:59]So what will you do? Will you do 72/12? What will you do? Will you do 72/12? Did you understand this? Did you understand this? Yes my brother. Hello Sanoj. So if you do 72/12, what language will we say for this? That means what is the meaning of the story I was telling here? 72 / 12 What can you write for this part? So you will write 72 * 72 * 1/12.

[00:09:26]And my brother, what will we call this part in language? We will call this part 1/12 part of 1/12 part of 72 1/12 part of 72, right? You will say this, right?

[00:09:38]Similarly, my brother, if you come to define atomic mass unit, then what is atomic mass unit equal to? That means what is 1 amu equal to, my brother? So 1 amu is equal to 1/12 part. Whose 1/12 part?

[00:09:50]1/12 part. 1/12 part of mass of 1 atom of C12, this is it my brother, can you say its formula or definition, what is the definition of amu, it will be 1/12 part, what will you call 1/12 part of mass of 1 atom of C12, you will call it amu, tell me all the children, did you understand this, did you understand this, my brother, what is one amu, like my brother you have got total ₹72 and you have to divide it in 12/1, then you will do 72/12, that is, in this language, what will you understand this, in which language of maths? So 72 * 1/12 means what will you say in this language? 1/12 part of ₹72. So now apply this entire concept here.

[00:10:33]What is an AMU sir? Very simple. This is also 1/12 part. But whose? So the mass of 1 atom of C12. Whose my brother? Mass of one atom of C12. Did you understand these things? My brother, spread this channel like fire to all the students of PGI Rohtak and PGI Chandigarh.

[00:10:47]I am making a promise to all of you children from today itself. From today onwards all the fear of chemistry will go away.

[00:10:53]All fear of Physics will go away and all fear of Biology will go away.

[00:10:56]Now from here I am telling you children that you all know, my brothers, you all know about this much which I am underlining right now. You all know about this. What is the mass of 1 atom of C12? 1.9 * 10 to the power is -23. That means, when you come to solve it here, it will be 1/12 * 1.9 * 10 power -23 grams, my brother. That means, if you look at this mathematically, it is 1.9 * 10 to the power -23 grams and divided by 12. Now when you go to solve this, from here we hope that you children will know how to solve it mathematically today. So when you try to solve this, the value of one MU will come out.

[00:11:35]What value will come out, my brother?

[00:11:36]So 1.67 * 10 to the power will come out to be -24 grams.

[00:11:41]And you have to remember this value from today onwards.

[00:11:44]Quick Look Quick Look what you need to remember in this page. So the first thing to remember is the one you will star.

[00:11:51]Triple star three star, this has to be remembered sir. After that, all of you have to remember this formula, Babu. This formula has to be remembered.

[00:11:57]After that, in the end, you have to remember these three things: the overall value of this formula. Will you remember it? Tell me quickly in the comment box. Yes Bhaiya ji it is clear. Very good my brother. very nice. It will be clear in this way, my brother. We tell the same thing. All the children who are afraid of Chemistry and Physics, their fear will vanish from today onwards. Chhoo Mantar will work like magic.

[00:12:14]Magic Cloud Nine Wow. Come on brother, let me talk from here. I will talk from here my brother. I will talk from here. Everything that was on this page became clear.

[00:12:24]Now we will just take one point of this page to the next page. What is the point my brother? How much do you understand the value of one amu and one am? Consider 1.67 * 10 to the power -24 grams. Isn't it? Now suppose instead of reading in gram units, I had to read it in kilogram units. In which should I study?

[00:12:43]In kilogram units. Look my brother, from here I will teach you a basic conversion and all of you children have to remember it from today onwards. To convert gram unit into kilogram, to convert gram into kilogram, brother, I will teach you this and if you try to learn, then to convert gram into kilogram, you have to divide 1000 by 1000. It has to be divided by 1000. It has to be divided by 1000.

[00:13:14]Brothers, please write this down once. So if the value is given in grams and it has to be converted into kilograms then it has to be divided by 1000. That means here is 1.67 * 10 to the power -24 grams. And if you want to convert it into kilograms then you will have to divide it by 1000. My brother listen we will write 10 as 10 to the power of 10, we will write 10 100 as 2 thousand to the power of 10, we will write 1000 as 10 to the power of 10 and sir we will write 10000, we will write 10 as 10 to the power of 4, is Rishikesh Babu here right now, yes Rishikesh Babu also came, very good, I was thinking that Rishikesh Babu must have come and just now I found him, very good Rishikesh Babu, you have to study in this way, right, now look here we can write 10 of 10, we will write 100 to the power of 10, we will write 2 thousand to the power of 10, saying 10 of 10 as 10 4 means to increase the power of 10 to the same number of zeros that are there after one. Did you understand this? So sir, what will happen with this? So if we tell you directly from here, if you convert this thing mathematically then it will come out to be 1.6 * 10 to the power -27 kg. What is this also equal to? Equal to 1 amu. So brother, I just wanted to tell you that you should remember one thing, if someone asks you to convert it into grams then keep converting it. Will it happen or not? Tell me this much. Hey Babu people, will it happen or not? Children who come to the channel for the first time will not forget to subscribe to the channel and like the session. Quickly like the session. Do it fast and share this channel with your friends.

[00:14:34]Share the channel with your friends. Come on my brother, what have we read in this page sir?

[00:14:39]An NCERT data which was obtained experimentally.

[00:14:44]What was the mass of one atom of carbon 12 found experimentally?

[00:14:46]So 1 / sorry 1.9 * 10 to the power 23 is 23. Did you understand this? Now listen carefully. Understand one more thing from here. If it comes to your mind that who is telling you this, how did you know this? If a question comes to your mind then remember mass spectrometer, write this down children, it was discovered through experiment by mass spectrometer instrument, by mass spectrometer instrument.

[00:15:16]Experiments revealed this. It was discovered through experiment. The experiment revealed what is the mass of one atom of C12. This much. Now this C12 has come in front of you. Who has come, my brother? C12 Sir I am not fully prepared for PG PGI MER B.Sc Nursing Entrance Exam. Will this video be sufficient? I am Jasmine, let me tell you something. You should watch this entire video.

[00:15:42]After that you can decide for yourself. Whether it is beneficial or not, I am sure that if you watch today's session completely from the beginning, even if you have not read it before, you will still understand everything and you will yourself know that it will be perfect for you. Rishikesh Babu says, Sir, can I ask you one thing, should I start studying on the NEET channel or here for nursing? Rishikesh Babu, you want to study nursing, right? It is your choice, you can study any of the two, and Rishikesh Babu, please start preparing for nursing, start preparing from the NEET ones, you can do it, Babu, you will be able to do it, Bua, we know very well that you can do it well, right? Then you will definitely study from there, okay Bua, now let's study from here, Rishikesh Babu's care person has got you it, very good, Rishikesh Babu, now let's talk from here, now let's talk from here, C12 must have appeared in front of you here.

[00:16:41]Now thousands of questions must have come to your mind that what is C12? Then to explain this, we will teach you children the concept of isotope.

[00:16:48]Whose concept? of isotopes. And let us explain one thing to you about isotopes.

[00:16:52]So explain one thing about isotopes.

[00:16:54]Before this, the meaning of iso is that if iso is seen anywhere in chemistry, then iso means same.

[00:17:01]What does iso mean? It is a bean.

[00:17:02]What does iso mean? It is a bean. So now look baby what is an isotope? Let's define isotopes. It is a different form of the same element. It is a different form of the same element. It is a different form of the same element. It is a different form of cell element. Where where atomic number is same. Where atomic number is same and atomic mass is different and atomic mass is different. And atomic mass is different. Did you guys understand this or not?

[00:17:39]Whom will you call an isotope, my brother?

[00:17:41]What would you call an isotope? So sir, this is a different form of the same element. Where Babu the atomic number will be the same and the atomic mass will be different. The atomic number will be the same and the atomic mass will be different.

[00:17:54]If you understand these things then we will immediately bring examples in front of you and from here you can clear your concept.

[00:18:01]Look, if there is an element called hydrogen, then my brother, three isotopes of it have been seen. One isotope is seen to be H11. One isotope is observed to be H12 and one isotope is observed to be H13.

[00:18:14]Okay, what is H1 H12 here, my brother? Listen. If we tell you here that you want to represent any element.

[00:18:21]Learn this first. Learn this first.

[00:18:23]If any element has to be represented.

[00:18:26]If any element has to be represented.

[00:18:29]If any element has to be represented.

[00:18:33]If we want to represent an element, we assume that its symbol is x.

[00:18:39]What is its symbol, my brother? x Sir, when will you get the question solved? When the who of this chapter? Nita. Neeta, when I am telling you the complete concept of mole concept in this chapter in short, all these concepts are being told in short.

[00:18:54]First, let me explain the entire concept to you, Babu, and then immediately after that, I will make you practice its entire MCQ.

[00:18:59]In this way, your children's preparation will be done at a very high level.

[00:19:01]Now look here, now look here, children assume the symbol of an element to be x.

[00:19:05]So sir, its atomic number comes at the bottom. Its atomic mass comes at the top.

[00:19:09]Whether it will come in this form or not, aunt, atomic number at the bottom, atomic mass at the top, whether it will come in this form or not, aunt, or not, sir, sir, sir, sir, it will come in this form. Just remember that we call atomic number Z. Brother, here Z will mean atomic number.

[00:19:26]What would Z mean, Ladon? Atomic number and A will mean mass number. So what does A stand for, my brother? will become the mass number. Did you understand this? Did you understand this? Come on my brother. Now I will talk from here.

[00:19:37]From here I will talk further. Look, the symbol of any element mentioned here will be x. Atomic number below, atomic mass above. So look here you have taken the symbol of element h. You will call the part here atomic number and the part here a. In this way sir this symbol was created.

[00:19:54]So sir, you will call the lower part atomic number. You will call this mass number. Sir, in the same way you will call this A and the one below this you will call it Z. Now let me tell you one thing, will you look at these three, look at this and look at this, brother, we will delete the extra thing, just to explain, we are putting an extra thing, we are putting the sign of arrow, arrow row, just to explain, look, when you look at this, you will look at this and you will look at this, my brother, when you are looking at this, what are you seeing, the atomic number is same everywhere, whereas Sir, the mass number here was one, here it was two, here it was three, the mass number is different, the atomic number is same and when the mass number became different. So Sir, when the atomic number is same and the mass number is different, then in the context of atomic number being same and mass number being different, I can easily say what is this?

[00:20:36]isotope. What is this my brother? isotope.

[00:20:38]What is it my brother? isotope. You must have understood this thing about isotope. Yes sir, I understand that it is an isotope.

[00:20:44]It became clear that it is an isotope. Now let us explain it to you in detail from here. Now from here let us explain to you clearly what is an isotope. Sir, did you understand this? Now look my brother, if you are reading extra things then remember this. Remember H11 is called protium. H12 is named deuterium Baa and H13 is named tritium. And remember this thing that is present in these three isotopes is radioactive. This is of radioactive nature. What kind of nature does it have? Of radioactive nature.

[00:21:16]You guys kids run away from the session. Why do you guys run away from the session, brother? When so much hard work is being done for you, then you people should not have the right to run away from the session, but you people run away leaving the session, this is a bad habit, my brother you have to study, my brother you have to study, the session has been brought for the selection of you children, now see sir, in the same way, sir, in the same way, as if you are studying here, right, okay, okay, should I call you Bhaiya or Sir, who [nasal sound] do you like it, my brother, all of you children can call me Bhaiya, you can easily call me Bhaiya, friend, all of you children can easily call me Bhaiya, the elder brother of all of you children, the conversation is over, now let me talk from here, now let me talk from here, we are here, yes, thank you so much Babu, thank you so much.

[00:21:50]Now let me start from here that Sir, you were teaching us C12. Now look at these isotopes, why did we come? Because when we were teaching, this came before us.

[00:22:00]C12 had arrived. We have to explain what this C12 is? So like you read about three isotopes of hydrogen. Similarly, carbon also has three isotopes.

[00:22:11]How much carbon too sir? Carbon also has three isotopes. Carbon also has three isotopes, that is, different groups of the same element in which the atomic number will be the same.

[00:22:19]Only the atomic number comes below. Yes sir.

[00:22:21]Only the atomic number comes below. Who comes down?

[00:22:24]Tell us in the comment box.

[00:22:26]Tell us in the comment box. So who comes down?

[00:22:32]Tell me in the comment section who comes next?

[00:22:46]5 Come on kids, let's talk from here. Let's talk from here. A little brother, an important matter had come up. An important thing came from here.

[00:24:08]Now look, look, look, look, look, look, look.

[00:24:11]Hey friend, what happened? Mobile phones have started falling these days. Where were we, my brother? Yes.

[00:24:20]Let's go here. Look, carbon also has three isotopes. Carbon 6 12 Carbon 6 13 Carbon 6 14 means Sir, you are seeing what is the atomic number everywhere? The atomic number is the same everywhere, sir. But my brother, the atomic number is the same everywhere. After that, if we talk about it, after that, if we talk about it, then you will see that the mass number is different everywhere. The mass number is different everywhere. The mass number is different everywhere.

[00:24:49]So this is an isotope. This time what you are seeing is carbon 6 12, we will write this as C12.

[00:24:55]We will write this as C13.

[00:24:58]We will write this as Sir C14. That means what you are seeing my brother C12 is nothing else.

[00:25:03]This is an isotope of carbon, my brother. What is this?

[00:25:07]isotope of carbon. What is this?

[00:25:09]isotope of carbon. So here you saw C12, here you saw C12, from today onwards if someone asks what is C12? So this C12 is the isotope of carbon which helped a lot in defining chemistry.

[00:25:22]Therefore, we will see this in chemistry everywhere. Did you understand this?

[00:25:39]Come on kids, let's talk from here now. If this hassle is also removed then now you people have to learn from here brother, there are many similar terms in which the first term we will teach you is atomic mass and once you learn atomic mass then immediately in parallel we will teach you gram atomic mass, see all the children have to learn this Babu, all the children have to learn it, all the children remain confused here.

[00:26:01]What will be the atomic mass, my brother?

[00:26:03]What will be the atomic mass? Listen carefully and you will enjoy it. To understand atomic mass, you have to listen carefully. What is atomic mass? So listen. So what is atomic mass? You will read the definition of this mass of brother here.

[00:26:14]Mass of one atom. Mass of one atom is known as atomic mass. Babu Amar, tell all the children. So what would you call atomic mass, my brother? What will you call atomic mass, sir? The mass of an atom. What would you call atomic mass? Sir, mass of one atom Sir, we will call the mass of one atom as atomic mass. Whereas Sir, my brother, you will also read gram atomic mass as molar mass.

[00:26:39]You will read it in the future as molar mass.

[00:26:41]How will you read gram atomic mass?

[00:26:43]You will read gram atomic mass as molar mass. Now listen carefully my brother. What is gram atomic mass? So to define this we will give a different definition. Mass of 6.022 * 10 to the power 23 atoms. Mass of 6.022 * 10 to the power 23 atom is non-age brother gram atomic mass is non-age gram atomic mass and this gram atomic mass is called molar mass.

[00:27:09]What do we call this gram atomic mass? It is called molar mass. Did you understand this? Did you understand this, child?

[00:27:15]Tell me quickly. Tell me quickly, tell me quickly.

[00:27:18]Khushi has become a family of 3.95 children. Thank you so much Khushi. What happened sir? No problem.

[00:27:24]Nothing happened, nothing happy. Now look, look, look, why did you become silent? Nothing, there was no special reason for being silent.

[00:27:31]Come on, Sir, when will the new class be held for UP NET? Live classes for UP C NET or any state nursing will be from 8:00 am. It was supposed to be from 8:00 am today, but I got well, but due to weakness, I could not wake up in the morning.

[00:27:44]Friends, because of this, children, today's morning class could not be held. It could be held later.

[00:27:47]All the classes that were promised will be held now.

[00:27:49]All the classes will be held on time, isn't it, Bua, I am here? Okay, Rishikesh Babu says, I am here, I am here, I am here.

[00:27:56]Jaan, see, the distances have been erased. I am here, I am here. Come on, very good, very good. The child is writing a song here, very good.

[00:28:16]Like, subscribe and share to all friends. Yes, absolutely, thank you so much. Yes, I remember the song Khushi. There is a different kind of worm inside me. Very good, very good. Now see, yes, what else can I do, there is no option left. Very good, now study here. Let me tell you, Sir, please play a song, some song won't do. I just hummed it jokingly. How beautifully you sing, Sir. Oh my God.

[00:28:40]Rishikesh Babu says, how beautifully you sing, Sir. Umma, wow, very good, very good.

[00:28:45]Thank you so much. Let's study. Let's study, child. Yes, let's study.

[00:28:48]Look here, what will you call atomic mass? Come here. So, Sir, when you have to study the mass of an atom, you will call it atomic mass.

[00:28:55]But my brother, the game is over here. The game is over here. How did you play sir? But sir, when I have to read the mass of 6.022 * 10 to the power 23, I will call it gram atomic mass i.e. molar mass. Did you understand this? Now I have to tell you children, my brother, if we have to give the mathematical formula of atomic mass, then my brother, you know, for example, if someone asked you the mass number of hydrogen, you would have said one.

[00:29:22]What is the mass number of helium? You could have said four.

[00:29:24]What is the mass number of lithium? Let's say seven.

[00:29:25]For example, let us say the mass number of sodium is 23.

[00:29:27]So all this is showing the mass number.

[00:29:29]What is all this showing? Mass number. That means sir, what is atomic mass? So if you multiply the mass number of each atom with amu, then this will give you the atomic mass. But there you have to read about gram atomic mass.

[00:29:42]So read and learn gram atomic mass.

[00:29:45]What is gram atomic mass? So here also you will write the mass number only. But you will multiply the mass number in grams. What will he give? Gram will give the atomic mass. Now tell me all the children, did you understand the difference between atomic mass and gram atomic mass?

[00:30:02]Bhaiya NEET batch is not live from 6:00 pm. There will be a recorded class. Please bring live classes, brother. Keshav Yadav, I have promised all of you children that all your classes will be live. There will be live classes brother. Please understand my compulsion a little, brother. What happens now is that we have to attend offline classes as well and right now there are two major exams which can be life changing exams for the children of 2026, so let's change the lives of the children a bit, friend, after teaching for 10 days-15 days, adjust with me for 10 days-15 days, please my brother, now study from here, study from here, study from here, children, now see, tell me now the tension regarding atomic mass and gram atomic mass is over, now I will talk from here, for example, now suppose a question is given to you, the question itself is what to find atomic mass, if you are asked to find atomic mass of sodium atom. Find the atomic mass of the sodium atom. If someone asks you this question, Sir, please tell me the atomic mass of sodium atom. How will you deal? First of all read the question carefully and find out what is asked in the question? So in the question my brother has asked whose atomic mass? of the sodium atom. As soon as you see atomic mass, you will understand the mass of an atom. And you know the formula for atomic mass.

[00:31:05]You know the formula of atomic mass, my brother. What sir? Mass number. The mass number of sodium atom is Na and its mass number is 23. That means sir mass number 23 * amu will be the answer. Now another question arises in this that find gram atomic mass. I would have asked you to find the gram atomic mass of sodium atom. Find the gram atomic mass of sodium atom, tell me my brother. Find the gram atomic mass of sodium atom. There was nothing to do brother. You have to calculate the gram atomic mass. If needed, molar mass could have been used instead of gram atomic mass.

[00:31:39]And the gram atomic mass will be mass number * grams. What will happen my brother? The mass number will become * grams. The mass number of sodium is 23. That is 23 grams. There is so much difference. If asked about atomic mass, I will say 23 amu. If someone asks for atomic mass in grams, I will say 23 grams. I understand this, my brother. very nice. The answers of these children, Rishikesh Babu Tamanna of Radi Keshav, have come.

[00:32:00]very nice. very nice. very nice. very nice. Now from here I will talk about molecular mass and gram molecular mass, let us read the definitions of both of them. Come on brother, let's buffer in between. Sir, here we are going to read about molecular mass.

[00:32:13]What are you going to read? We are going to read about molecular mass. And here we're going to read grams molecular mass. Here we are going to read about gram molecular mass.

[00:32:22]Now look child, it is the same thing again.

[00:32:24]Again the same thing is here, you have to understand. Wait a minute, sister is calling. One second, Namaste Didi, please tell me.

[00:32:42]Then ok from when will we talk right now in the live class yes ok no problem no problem we will tell you namaskar we will do it later ok no problem now look children now look children let's talk from here now let's talk from here listen carefully let's talk from here sir listen carefully to the definition of molecular mass sir mass of one molecule remember this babu mass of one molecule is non age mass of one molecule is non age molecular mass very simple definition is done mass of one molecule is non age molecular mass and what will be the definition of gram molecular mass here so sir mass of see children what will be its definition mass of 6.022 * 10 to the power 23 molecule mass of 6.022 * 10 to the power 23 molecule is non age a gram molecular mass is non age what? Gram molecular mass. That's the only difference, my brother. And here also, one should first know how to identify the molecular mass.

[00:34:08][laughter] Let's talk from here now, kids.

[00:34:15]From here let's talk about molecular mass. So the first thing that comes to mind for finding the molecular mass is that Sir, teach me how to identify the molecule.

[00:34:22]Teach them to recognize molecule after molecule. You know very well Sir that if there is more than one atom then it will be called a molecule.

[00:34:26]For example, suppose H2O comes in front of your eyes. What do you need H2O for?

[00:34:31]Molecular mass is required. So listen, let us tell you a formula for molecular mass. There will be a formula for molecular mass. This is a formula created by me. Do you know what molecular mass is? Formula Mass * amu Formula Mass * amu Formula Mass * amu What will you call it? You will call it molecular mass.

[00:34:49]Write this down, child. Now a deep question must have come to your mind that Sir what will be the formula mass? Formula mass means how much formula is used to make a molecule? So you tell me, hydrogen has number two. There is a number for oxygen. Two of hydrogen, one of oxygen. So now you have to learn from here.

[00:35:04]From here you have to learn one hydrogen, remember it my brother. A hydrogen has a mass number of one. So here there are two hydrogens, so because of two the mass number will be two and the mass number of one oxygen is 16. So here sir if you add 16 it will become 18. That means sir, this 18 that you have brought is actually the formula mass, fm fm means formula mass, this will be the formula mass, yes my brother, see how will the molecular mass of h2o be found out, you have found out the formula mass as 18 * amu, now this question arises, gram molecular mass, in short we write gram molecular mass like this, well you can call gram molecular mass as molar mass of the molecule, my brother you can easily call it molar mass, so how much will this be, remember, you have to do formula mass * gram, the formula will be formed.

[00:35:48]So here in the case of H2O, the formula mass is 18 grams, that is, the molecular mass per gram will be 18 grams. Sir molecular mass will be only 18 M. Did you understand this? Rajkumar i.e. Khushi says that letters teach us letters and tell us the meaning of words. Well, letters teach us letters and tell us the meaning of words.

[00:36:07]Sometimes with love and sometimes with scolding he taught us how to live life. Very nice, very nice. No sir, only two topics have been recorded, it is easy to see, yes absolutely absolutely very good very good very good now from here I will take you children forward, you have come to know the difference between molecular mass and gram molecular mass, now you have come to know about AMU aunty, now from here first of all we will take you people to the mole, brother brother brother brother brother we will bring you to the mole, now you all have to study mole, what do you all have to study mole, now listen everyone, first of all, like all of you children know one thing in your deep memory that what does one dozen mean, number 12.

[00:36:44]One dozen equals to 12 numbers. A dozen means the number 12. Isn't it my brother?

[00:36:48]A dozen means the number 12.

[00:36:51]Similarly, my brother, a mole is also a type of number. For example, the value of one dozen is 12. Similarly, the value of one mole is 6.022 * 10 to the power 23.

[00:37:01]You have to remember these things. You have to remember these things.

[00:37:03]All the children please remember this. For example, there are 12 numbers in a dozen.

[00:37:07]Similarly, one mole contains a particular number. How much is that? 6.022 * 10 to the power 23 All children should remember these things.

[00:37:13]Remember, remember sir, now we will tell you this number in our language. This number is called Abogadro number.

[00:37:22]What my brother? It is called the Agadro number.

[00:37:25]This number is called Agadro number.

[00:37:29]And understand one more thing. The Agodaro number is denoted by NA. It is denoted by Na.

[00:37:42]It is denoted by NA.

[00:37:46]What is this denoted by? is denoted by NA. Did you understand this? Did all of you children understand this? Yes sir, I understood that Agadro number is denoted by NA. That means, my brother, now go here and understand that if someone asks you how many particles will be equal to one mole of particles? So you close your eyes and say that one mole of particles will be equal to 6.022 * 10 to the power 23 particles.

[00:38:11]And you know very well that this number is equal to NA. That means if someone tells you 1 Na particle because the matter is the same then 1 NA particle will also be equal to 6.022 * 10 to the power 23 particle and we will tell you aunts that if the need arises for replacing the particle, we will keep changing it as per our wish. That means, if needed, we can place atoms in place of particles. Sir, if needed, we can use molecules in place of particles.

[00:38:38]Sir, you can put the number of electrons there.

[00:38:40]Sir can keep the number of proton.

[00:38:41]Can hold neutrons. Did you all understand this?

[00:38:46]Tell me this. Have to like the session brother.

[00:38:48]Children who come to the channel for the first time have to subscribe to the channel. Don't forget to like the session. Do n't forget to like the session. No child will forget to like the session.

[00:38:55]All the children will subscribe to the channel. Make this session reach all the children of PGMS Rohtak and PGI MER Chandigarh.

[00:39:00]Now come on, now the session has started, everything will become clear for all the children through this session.

[00:39:08]Everything will become clear.

[00:39:09]All fear will go away. Now that you have understood this, from here, for example, if someone asks you how many atoms will be there in one mole of atoms? If you are asked how many atoms are equal to 1 mole of atoms? So your answer will be 6.022 * 10 to the power 23 atoms. My brother, if someone had talked to you for example that there is one mole of molecule, what would you have answered?

[00:39:36]6.022 * 10 to the power 23 molecules.

[00:39:41]My brother, if someone had asked you how many electrons are there in one mole of electrons? So your answer would be 6.022 * 10 to the power 23 electrons. Did you understand all these things, my brother? Did you understand all this, my brother? Now from here we ask you a question.

[00:39:54]Now from here you have a question that find the number of atoms. Find number of atoms. Find the number of atoms in each mole of atoms. Find the number of atoms in two moles of atoms. Look at this question my brother. And in this question you have been asked to find out the number of atoms and tell that there are two moles of atoms.

[00:40:15]How much? There are two moles of atoms in it and you know that sir, you know that since 1 mole of atoms is equal to 1 mole of atoms is equal to 6.022 * 10 to the power 23 atoms, 1 mole of atoms is equal to this many atoms sir, that is why you are concerned with how many atoms sir, two moles of atoms means that it will become 2 * 6.022 * 10 to the power 23 atoms.

[00:40:37]Now tell me children, did everyone understand this? Did everyone understand this? Now listen children, let me tell you one thing. Hey look, today 's classes got delayed a bit due to some reason, but children, I have an offline class from 4:00 PM, so I will have to leave for a while now, but you children wait, don't worry, your classes have started, these classes will be from 2:30 PM for all of you children, till 12th July, till 12th July, you will get these classes from 2:30 PM only, after 12th July, from 13th July, your classes will be shifted to 9:00 PM in the night and as soon as it shifts to 9:00 PM, then every day the class will run from 9:00 to 12, 9:00 to 12, the class will be for three hours. Right aunty, the class will last for 3 hours.

[00:41:16]So I tell you all that I will leave today 's session here. Tomorrow, that is, tomorrow, what date will it be tomorrow, 10th, right?

[00:41:22]We will continue from here on the 10th and tomorrow we will teach you the complete concept of this chapter for one hour and then the day after tomorrow we will make you answer the questions of this chapter. So sir when will the bio class be? Tamanna all the classes will start after 12th i.e. from 13th July. The class will last for 3 hours. The class will last for 3 hours. Remember this. So let me meet you children. Radhe-Radhe.

[00:41:40]Share the channel and reach as many children as possible. And remember those children who have to prepare for NEET. Whose? I have to prepare for NEET.

[00:41:47]I am telling it clearly for the children preparing for NEET. The free batch of yours which has been launched from today @ Veera Classes, search it on this. Today evening at 6:00 p.m. The class is live here. Aunty sorry, it will not be live, the premiere will be telecast. My brother, will the premier work and the children who are at the very basic level, the basic level, will also understand it. I promise. Let me meet the child.

[00:42:10]Radhe-Radhe. You guys will take care of yourselves.

[00:42:12]Radhe-Radhe children, you will get its PDF notes. To be patient. Ok.

[00:42:15]I'll just hurry up and go offline. When I come back from there, I will send the PDF on the channel WhatsApp group.

[00:42:19]So you children will take care of yourselves. You will study a lot.

[00:42:22]You will study hard. And all the children are from AMRU CET. Be ready, be ready.

[00:42:26]Now its your turn.