12th Chemistry HSC Paper Solution 2026 | Full Answer Key & Paper Analysis | Maharashtra Board

How did your papers go? Please write at one comment box The paper isn't that difficult; he asked some very basic questions. I don't think anything in this paper will be too hard for you. What will you get? Yes, acetonitrile clear B B B all the rest The other two's D, the other two's D, the paper went hard, AG went hard, it went hard. You were supposed to calculate the formula here: delta U equals two Q plus W, okay? Heat is being released. Mainesh Ten is performing, and Vag Pfaum is performing too, surrounding it. Minesh fifty, so how much will Trotl be? Minesh 25, okay. Minesh 25 said. Alright, next, next, tell me this CIV coordinate number in this complex, this ten, this are H up the vote Coordination Number Atomic Number Coordination Number Number Number Coding Number Just take it. After that Among the following 3D series elements having the highest value of first ionization enthalpy Whose are they? Zinc's Yes Zinc is the most abundant Alright Fix this Ionization enthalpy And the pOH of a 0.1 mole HCl solution is what? Okay So you know what pH is How much is it? 0.01 has been given, right? So what will remain? This is 2. So, how much will this be? 12 Okay The answer will be 12. 12 means D Option D What will be your answer to this? The pOH of a 0.01 mole HCl solution is 12. Okay B8 of 2 There are 8 rows. 8 Which one? 5, 6, 7, 8 8 children Linkage isomerism Linkage isomerism Okay? Come on, just break it open once more and take a look MCQ Living children have just arrived OK? Look at the MCQ, it's torn, torn, your own It's the previous one. Aqueous KOH You must know this. H2O is used in fuel After that, I did The oxidation state has been calculated here Okay? When you people take Methailey Like whatever it is Methyl chloride With Casian Will you treat me? It will become so only then Okay? Then methyl chloride with alcoholic casein What happens next? What is carbonated water? Yes Gas in liquid The unit of the rate constant is per second. What is the order of the reaction? First-order reaction A system releases heat. I've already shown it to you, 25 The child was experiencing linkage. Just take a quick look Linkage ism Option C And this one, the one with the "at" 5, 6, 7, 8 In the wall I have told you A secondary amine is quite basic. After that Among the following 3D series The element having the highest value of ionization Zinc isあたり And the duckling of POH is 12. What is the surname of the person with POH? 12 Okay? Okay? This was your MCQ I think all the children have We will keep solving MCQs ourselves. Very fun Okay? Has it been done or not? Tell me what has been done Has it been done or not? Your prophecy is right. 7 right, wow, dude Writing it down is a very good thing. Seven-seven is enough, that's plenty. Come on Let's just go ahead and answer some short questions. Promethium Promethium was the most radioactive utmost. Promethium PR Okay Look at this This small organic reaction is given. I'll tell you how to do it. Then that entire double bond will break. Meaning, these cycles will become hexagonal. Look at this kind of way All these bonds will break down in this. Alright Come on Next is this Look at this These semi-semi-caldie-heights, de What has been asked? Write it down. IU-PSC Name The common name is "Seli-seli-kaldee-height." And its IU-PI-SSC name I will tell you Look here That will be it. Bengal Heights Like Two-hydroxy Bengal Heights What have all the people done? This is S-2-hydroxy Bengal Heights After that, it is This was a numerical. Copper Hydroxycine And edge length You were given the same value. How many Now it's the net, kid. Everything is going well. I've seen it, that's fine Don't comment, just get up Come on Now, regarding this, there was 495 picometers was The same value And you have been given the FCC. Radius of the Copper He has said to find out Alright Put the same value there And you have been given the answer. Alright Put the same value on top And you will get the answer. What was the value? 495 Okay Divide by 2 root 2 I get 175, that's all. Let's move forward The chemical formula of Teflon is (C₂F₄)ₙ. Teflon Tetrafluoroethylene Tetrafluoroethylene was mentioned, wasn't it? CF2 Single bond CF2 Tetrafluoroethylene is this Tetra Fluorine Ethylene Alright Write the name of nanoparticles which acts as a highly effective bacteria disinfect Silver is used Yes Silver is used for highly silver disinfectants Sir, it gets 25 marks. Dirty paper has gone Okay, do you want to know about it? Your paper is ruined. I will explain everything. First, let me tell you this as well A lot of kids have come here. What is going to happen? See In 12th grade What is the passing criteria of the board? Kid, you have a total pass 10 to 12 marks are reserved Means If you are failing But if you are failing in all subjects Then you won't get marks. If you are failing in 2 or 3 particular subjects Then you get Like your math and science Mathematics and physics Chemistry Physics Game All this So, kid, you get 2 to 3 marks for this. You get 2 to 3 marks To pass Like You got 30 in practical. Got 3 in theory So it became 33 So 2 marks will give you a guess It will be 35. And now you will pass Passing is granted in this manner Okay So everyone involved in the passing Has everyone cleared up the doubt first? Don't comment about passing again and again Passing I'm going crazy after seeing the passing Okay Do not comment related to passing Okay I think I have explained everything related to passing. Okay Let's move ahead Yes, you have done this. Okay Next is What is isomorphism? Tell What is isomorphism? Yes Similar chemical formulas and crystal structures Similar chemical formula and chemical structures Okay That is what isomorphism is. You need to say Kid, this is a very important question The smallest repeating structures Smallest repeating structure Okay Atomic radii It was asked so easily What is electronegativity? Oh my God! Sir, only one sheet of paper got spoiled I have never seen a simpler question than this. Electronegativity decreases down the group Explain the trend in the following group of 17 elements So atomic and ionic radii increase here Okay What will you write? Atomic This one Atomic And ionic Radii What happens? What happens down the group? It increases What happens to electronegativity? It decreases Okay Homoleptic and heteroleptic refer to types of ligands in coordination chemistry. A homoleptic complex is one in which all the ligands surrounding the central metal atom or ion are identical. For example, in [Fe(CN)₆]⁴⁻, all six ligands are cyanide (CN⁻) ions, making it a homoleptic complex. In contrast, a heteroleptic complex contains two or more different types of ligands. An example is [Co(NH₃)₄Cl₂]⁺, where the ligands are ammonia (NH₃) and chloride (Cl⁻), making it heteroleptic. The distinction is important in understanding the structure, reactivity, and properties of coordination compounds. What occurs in homoleptic? The same type of ligands What kind of the same type? The same type of ligands For example, Fe, Cn, 6 So, kid, all these Cn are the same type of ligands. But if I talk about hetero So different types of ligands Different type What are the different types? The ligands For example, Fe, Cn, I have taken four times. And next to it I've put chlorine. So, these two are different. So that is the heteroleptic ligand. Let's go Oh, it has come Bromine water does not react with glucose. What is the reaction of bromine water with glucose? I have to tell you now Okay Glucose CHO CH2OH four times CH2OH Okay When you use bromine water So this is its oxidation. And the upper glucose It is converted into gluconic acid. What does it get converted into? It is converted into gluconic acid. Okay It was easy. In enantiomers The optical isomerism in which Optical isomerism In which non-superimposable I had taught Non-superimposable mirror image Unenforceable I have to create a lot of images Okay Let's go Next is your Write down the one-dimensional One-dimensional nanostructures For size less than 100 So it comes in at zero From where does it come? Save It comes in zero Okay Nanotube Or nanowire Write down the hydrolysis reaction Of ethyl methyl ethers Okay If you perform hydrolysis on ethyl methyl ether So what will happen? I will tell you what will happen. Ethyl methyl ether CH₂OH OH Methyl If you perform hydrolysis on an ether So what might happen? One is your methanol. And one is your ethanol. And ethanol and methanol Okay If you perform hydrolysis on an ether So see this bond breaks And ethanol and methanol Now where do I solve them? I have to solve it on that page Okay Write down the osmotic pressure Of the solution containing 0.822 gram To grow in 30 ml of water And this data is provided Okay I will tell you everything. You're not afraid of failing first, kid. I am not a passive source Okay Sir, MCQ third option mcq mcq mcq I have explained all the options of the MCQ. The rest of the people have come to see the MCQ. Okay The rest of the people had come to see MCQ. It didn't happen that MCQ ran away. Okay Paper wasn't that hard. The child was moderate. You don't know why it was difficult. Isotonic pressure What happens in isotonic? The same solution is involved Squat kid effects Ferromagnetism Strongly attracted by a magnetic field Hair flow refers to the natural direction in which hair grows on the scalp, typically determined by the orientation of hair follicles. It is a crucial factor in hairstyling, haircuts, and hair treatments, as it influences how hair lies, falls, and responds to styling products or tools. Understanding hair flow helps stylists create balanced, natural-looking styles and avoid issues such as uneven parting or hair that stands up unexpectedly. Hair flow is such a great question Okay Sdpe What is used in SDPE? Tell me Uh Ziegler-Natta catalyst Ziegler Nata We use a catalyst. Okay Draw the structures of Isoprene units In nature Rubber The isoprene units in natural rubber are repeating structural units of isoprene (2-methyl-1,3-butadiene) linked together in a head-to-tail fashion. Each isoprene unit consists of five carbon atoms arranged in a specific configuration, with the double bonds positioned between carbons 1 and 2, and between carbons 3 and 4. In natural rubber, these units are polymerized to form long chains of cis-1,4-polyisoprene, where the methyl groups are on the same side of the double bond, giving the polymer its characteristic elasticity and physical properties. There are some such molecules. The isoprene unit is here Okay Simple question In came Effective Uh The effective atomic rule came into effect. Okay That was also a good question. Okay In fact Chapter 6 Okay 4 minus If it had a 36 answer Then en will follow It was very easy. X Z minus Z minus X plus Y Had to do What is z 26 Is there Fe? What is Fe? Scadium Tritium Indium Chromium Magnesium Iron Okay This is what happens What will be its oxidation state? You will have to determine its oxidation state. X plus 6 minus 1 Is equal to 4 So x equals 2. Will come Yes 2 2 plus y 6 minus 12 It will come 36 Okay So on will follow in this Very good questions I don't feel anything hard about it. Yes Look at this This is your sn1 Mechanism What was given Write the mechanism of Hydrolysis of Bromomethane This was your sn1 SN1 mechanism Tell me how to do it Look at the question Explain the mechanism of Alkaline hydrolysis of Bromomethane Alkaline hydrolysis of Bromomethane This was the question Alkaline Hydrolysis Hydrolysis of Bromomethane Okay See This was given This was your SN2 Sorry This was your SN2 What was yours? SN2 Primary SN2 You had to explain the mechanism of this. So the mechanism was very simple. As I told you Okay Now if you don't do it What should I say? Okay OH will attack from the rear side Okay So it goes to TS Where does it go? It goes to the transition state Where OH is forming a bond And what is happening to Cl from here? The transition state is approaching. After that When OH forms a bond So kid It comes here OH joins And This What does it do to its position? It changes. Okay So this was the question This mechanism was asked of you. Okay This was a very simple mechanism. Okay This was asked After that About Ipsum salts Was asked What is MgSO4? Okay MgSO4 was Epsom salt This one This is Ipsum salt MgSO₄ 7H₂O This was an easy question. Okay H2SO4 is used in fertilizer Lead accumulation Battery Like a lead-acid battery is used Okay A lead-acid battery is used. Okay And where else is it used? Fertilizer Fertilizer is used in industry. So I didn't find it that hard Okay Yes One numerical This numerical I didn't have to do anything in this. What was your K equal to? C alpha squared One minute C Alpha Square Constant Concentration Okay So acetic acid was given here 0.5 percent was given Okay In the Decimolar Decimolar solution calculated dissociation constant You were asked about the dissociation constant. Like 0.1 is given Its answer is not given 0.05 0.01 Concentration is not provided here Okay You should have given 0.01 here. Concentration That's why you will put 0.01 Into This is given in percentage So 0.05 You will do it. So how much will come? 0.05 Okay What will you do with 0.05? You will do a square Okay Then it will happen 0.01 is not provided, sir. But that That is gypsum salt. So ask for gypsum salt Lorem ipsum dolor sit amet Okay MgSO₄ Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Ipsum is salt. MgSO₄ There's one thing I don't understand. Concentration is not provided here So how will you achieve this level of concentration? How will you perform multiplication? Concentration is not provided A concentration of 0.01 should be administered. Okay Let's see what happens to this question Concentration will give 0.01 Then it will provide focus. That's why that reaction Means you will multiply That's why the answer will come Okay Convert Acetic acid to ethanol How will you do? You will use lithium ammonium hydride. What will you do here? You have given acetic acid CH₃COOH You have to produce ethanol. Yes Ethanol So what will you use now? Lithium ammonium hydride Okay There was nothing difficult about this. I'm not encountering anything difficult here. Any question that is difficult Ask me any question you like. Which one seems difficult to you? Yes The Canisaro reaction is not a recognized chemical reaction in the field of chemistry. It is possible that there is a confusion with another reaction or a misstatement of the name. If you meant a different reaction—such as the Cannizzaro reaction, which is a well-known organic reaction involving aldehydes in the absence of alpha-hydrogens—please clarify so that an accurate explanation can be provided. Child, this is too much. I just taught my child yesterday. And said that The Canisaro reaction will occur Many things will come. I am not talking about Canisaro Plus 50% NaOH or KOH How much NaOH will you use? 50% What will happen? Yes ONa will go somewhere Like Na will go here And The H will come here. Like Something like this This will be Okay This was After that You have to give such an easy answer Don't ask Lower the rate law What is the rate law? Rate is directly proportional to Concentration of reactant What is your reactant? NO₂Cl It's reacting over and over again. Okay See, it's in the middle. And second What did you ask? What is the intermediate? So chlorine is the intermediate here. How did I know? See, chlorine is being used here and here. Okay The standard electrode potential Cu plus 22 This much is zero point. Calculate the voltage in volts This was a minor issue. Okay I will tell you The value of the potential You will receive this amount I've taken a little more page This is the lowering of vapor pressure. Statement of the second law of thermodynamics Convert Have you completed this conversion? What is convert? What did you ask? Acetamide to ethylamide What is acetamide? I have told you many times Acetamide is this Into Ethylamide This is ethyl And this is Amine. So how will you do it? You could have used this here You could have used lithium aluminum hydride. You could have used a lot of things here Okay Explain Amphoteric Nature of water So once Water had to react with HCl. And once it had to react with ammonia. Okay Once it donates Once it accepts Now this was a certain conversion. Conversion Should I tell you how to convert this? Okay What is this specific conversion? Peptide bond I have been told that The bond between C double bond and NH What do we call that? Peptide bond This is also here Interhalogen compound The electron configuration of Chromium is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵. Wow! Such an easy question If you had to write CR So AR 3D3 4S2 Scadium, Tritium, Endium Chromium Okay 4 will come 4 So it won't be stable here. So what will you do? It will be like this 3D5 4S1 Okay Something like this Its electron configuration What came after that? I will also tell you this question. When I am telling I will tell you from all the lines Okay It was a very easy paper. In my opinion There were small questions. Calculate the magnetic moment This too I told my children yesterday Do it and go I told green chemistry Do it and go Okay What is it? Mu is equal to Root N N plus 2 Okay Now you have to do titanium Scadium, Tritium So how will you handle titanium? What should I do here? You will see See You have to do titanium plus 3 So Scadium, Tritium Like 3D 2 4S 2 AR Now you have to subtract 3 Ti plus 3 Okay So 2 will be subtracted from here So 3D, 1 will be left So how many unpaired electrons are there here? So 1 1 plus 2 Solve it according to this It was very easy. Now this one is left This Ethyl Ethanol into Sodium Ethoxide Phenol into Phenol Ethanol into Sodium ethoxide This is the Williamson synthesis reaction. Phenol into Orthophenol sulfonic acids This is its H2SO4 reaction The exam paper was very easy. H2SO4 reaction Ethyl bromide into Methoxyethane Okay, this is Williamson synthesis. Okay So I think I don't think this is something difficult. What will you use here? You will use H₂SO₄ What will you use here? This is your Williamson synthesis reaction. RX Plus Rhona And here you had to add sodium On Ethanol Like Is it ethanol? Yes C2H5 What did you have to add on OH? You had to add sodium. Whatever is made Like C2H5 ONA This is made Here sulfur You had to use the Williamson synthesis. Okay You will obtain it by using the Williamson synthesis. Okay This came as well Two similarities And two differences Difference between Lenthenide and Rectinide Kid, both have an oxidation state of +3. It is Polytetraethylene Or Tetrafluoroethane Yes, it is Tetrafluoroethane. Did I say something wrong? Tetrafluoroethane Did I ask the question about tetrafluoroethane? Tetrafluoroethane Yes Tetrafluoroethane Okay Now see this Dissimilarities and dissimilarity Lenthenide came many times. So you should have known this After that Write What is the effect of the following reagent on chlorobenzene? If you are on chlorobenzene Should I tell this one? See If you are on chlorobenzene Child There is no place here I will tell you here Suppose you have chlorobenzene. Chlorobenzene If you put HNO3 in it HNO₃ So What will happen? The NO2 group will go here Plus, H2 will come out. You can also apply it below You can also apply it to the para position. If you use H₂SO₄ The SO3 H group will go See What should I use on this? H2SO4 Okay The SO3 group will go here Yes SO₃ The H group will go And H2O will become your by-product Plus H2O will become your by-product Okay So this was the overall view But The second one is Pauli He is saying Tetrafluoroethane Okay What is the chemical name of Teflon? Pauli Tetrafluoroethane Okay Pauli will come here. Right You are right It is made of tetrafluoroethane. Like See I told you It is made of it What is it made of? Pauli Tetrafluoroethane Okay It is made of it What is it made of? Pauli Tetrafluoroethane Okay So this was your overall revision And I told you What you should do to pass the exam How do you achieve passing grades? Okay I explained those things in this And I explained the entire paper. What is it and what is not You can see it You can mix it. You will get all the answers. Okay So thank you for watching this video And if you find this video helpful to you Please subscribe to this channel Thank you Okay Does anyone have any further questions about this? Yes Does anyone have any further questions? If anyone has any doubts, please ask. Sir, that is incorrect. Pauli Tetrafluoroethane Yes, okay Actually, I've gone a little up and down. Okay Does anyone have any more questions? It's wrong Yes Does anyone have any more questions? So ask Right now If there is any doubt regarding any question Then I will tell you Whose answer? What will be the answer? Okay Almost everyone has left. Everyone knows the answers And no one told me How was the paper? Was it moderate? Was it easy? Or what was it? No one told me No one has the courage to tell Sir, one multiple-choice question is correct. Who is it, brother? One multiple-choice question is correct. But you know one thing I made many children important Everything came from it Everything from it It all came from it, child. Everything I found the paper very easy. Whoever says that the paper is difficult I found the paper very easy. There was nothing in the paper. Okay There was nothing. I have not seen an easier paper than this. Since your paper has provided Okay I have never seen an easier paper than this. Child, the test was very easy. Sir, tell me What should I say? Correct Multiple Choice Question More Correct Alright, child So you don't have to be afraid here If you are guessing marks If you feel like you're going to fail Or if there is any problem So please ask me in the comment box Sir, I have written down all the questions. Questions from my mind I have made all the attempts. I just got one right I have made all the attempts. So I will get something Okay, don't get so tense It feels really good to talk to you. And I was also telling you about the grace mark. If you have a little bit here and there If you fail, then they will pass it there. So you don't have to be afraid If you fail, then what happened? Whatever papers you have ahead You have to pay attention there Sir, do you receive marks for writing A, B, C, D in MCQs? If you write the question number and thenIpvA, B, C, D Then we will give But don't do this Sir, I wrote tetrafluoroethylene. If you write tetrafluoroethylene, will it be correct? What is your percentage? I mean, what do you think? How many marks will you get out of 70? So according to that, I'm telling you How do we moderators review papers? Or how will we give you marks? Okay, if you tell me that, I will tell you Sir, Multiple Choice Question, A, B, C, D Yes, okay, you will get marks. Alright, you will receive marks. Don't be afraid Okay, don't be afraid at all Okay, bye-bye Okay, it felt really good. Talking to you Alright, let's meet. Okay, thank you very much for connecting with me. Thank you very much.