 यहाँ अभ थुस्वी बाट यहे हैं है, अज्खे यहे यहेस भीट्रीू में, मैं थोडा अस्पीज में साडे कवेशट्टिन जवने वाली है, कियकिं? बुलो कियक। because in the first second third videos I have explained basic concepts along with questions. So especially don't forget to watch the first second video We have discussed a lot of basic aspects that are going to help us to answer all our questions If you have any questions do press the comment section and then we can discuss them there Okay, then let's start today's video these are water and air. okay. Assertion is absolutely correct and reason is also correct. but reason is not a correct explanation. like corrosion of iron is commonly known as rusting why is it happening? because if I make iron react in air, i leave it in air, there is a moisture content मुमबाई की बात को लो, मुमबाई आच्टनी में में आयन की असे प्योर रोड पे एक दिन असे चोड देती हो, तो कोरोचन बहाँ जल्दी होगा आस खंपेर तो बआगलोड आच्टने है ना, चलो नहीं. तो अगर आएं को एर में रखते है तु क्या करेगा अएर में अकसीजन से और वोटर से रेएक कर को, की या बनाता है आएन अकसाइइट डोड एक समाउद्टो वोटर आत मिंस यह मारा आईद्टील्टेट इस्टल होग में यह, आएट्टीट पऊस्तल लोभ वोट आएन अ तो बोगी दोगी हुम रहाता आपने वनर के साथ है तो मैंने एसे पुछा वन से कि उसकनाम क्या है कि उनने मैं से बताया वन न लिए कि भी ہے, रुस्टी है मैं बोगे रुस्टी क 허 रुस्टी कि एसा नाम में रुस्टी कि prom वो तलगटी क्यो है, तो बहुते वो रस्त कलर का है थे। उस्डिल, ज़़ एमाजिज की जो ब्राून कलर का होता है, रस्त कलर का होता है, हम एस को रस्ते भी गय सकते हैं। तिके शो आयन, अख़ाख, फेरी, कोखचाए, धोट, अखच्तो, अहान मैं अम है, और अहान मैं, अर अहान अहान मैं, आप तर यह नहीं सागस्वाए, उठी खा़उँा, और बद्र, अहाश्वाए, आप बर कारत्उट्य लिए च्श्दोत,जब खेखाओ, आप फर्णोग ज़ुद, अख्टर, थे रह्हब, बिच्च्चच आप लेक्चि उना नीक सीक हैं बूकाता है और तो शहाता है लोग आशक्छ कर रहागा अखेon the 41 question में अगे नशशना जलदी से देखे हैं कैगे क्या हैं sujet यहां आप आख्छ खुड माटेल रहागा अपन कर सता एक ठाएड कंटेन र किया और अप अप बग्ड यार टाएत कोड़नेस यार अप बग्ड यार भोगड यार वीगा देशन कोड़नेस कना नहीं नहीं लजो ज़ा देशन साभाद्दनेस कना पात तो साभी लिए है वोगड साटप ofon packed in air tight containers thige food material pack in air tight containers वीज़न is what, Oxidation resulting in rigidity is prevented तो दोनो ही चीज़े करेक्त है ना वीज़़े फुट मटील को क्या करते है या तो उसको सील पैक कर के रग देते है दिके, अगर हम उसको सील पैक कर सकते है तो पैक कर के रखते है इसले वो माकेप में फिर सेल हो जाता है करेक अगर आप आप है। प्रसाईा है अफ्रतशाश में वो में something like आप एक खान्चर भूड करो ड़ा रग को आप आप आप रख कर रग कर रग देते हैं आप और में या पी आप में बारे कान्चर कर रग रग वीज़ा आप गुर भी आप जोग भो आप लगा जे भी देखा हैं बाला गी की चिःस ले लो भाब गागी देखा बाग दाते हैं और जमाने की आवर बहरी होती हैं योड़़ थोड़े से टब होते है है ना टीके जब में चोटी फिन तो बाब आप वी अप उस तुदिं देखा ल� यार मडल भी अंकल ले तो मुझे मुझे आसे उलू बना दिया इतनी सी चिपस दिया और तना बड़ा पैक्मिट दिया बर अब मुझे समझ में आने लगा है कि आसा क्यो हूँता है तो देखो आसा क्यो हूता है कि उस में नित्रोजन गैस फिल करते है आसर्चषन मैं बारणिश्य से हिस्रीष Columbia अप पासच मैं चिपस्या बाखेष प्लोट़ी कि जैस भूल नित्रोजन तुकई श्विल दिया है था विल झास घीखे च्तिब ले खाज़ों, विल गासा विल गास बcott ठासा स्बाखत अप बच्छन मैं चाहाँ ♥ चाहँ जालो नेख सब लोगग, 44 क्छन देखते हैं जल्दी से अच्सरुषन पूलोविं डियाच्चन दिसक्रएइड दिसक्रएइड देखचन रहिश्टिंग आयन र माँ ड़ाश मैंगद्राश। वाया आपने यहांपर गढ़बड़ कर दे आा रमाँ आमाँ अजो acids विसी आ आपा मेर्विशी विसी उत्पर सब जासा दईज़ां पर लईआण ड़ाश है अप आयन रचक लगता है आयर से तो अक्षीजन और वारदर मोलितू दोंग है। आप अपिसने क्या पनाया? आयन की वलेंची 3, because it is 3 plus, अखसिजन की वलेंची 2 minus it is 2. अखसिजन की वलेंची 2, so when you cross multiply to make the formula, ये क्या फोमौला बनाईगा? ये आपर बनाईगा f e to o3, बनाईगा आयन would be multiplied by 2 and अखसिजन would be multiplied by 3. तो फोमौला now we have f e to o3, correct? पनगछाँ बलेंची 3 plus फोमौला आपर बनाईगा प्राए आपर इंगा बसकाजम की रएए? नहीं बाईगा बलेंची गरावा. तो देखो यहाए आपर का आयन की बलेंची 2 plus , अखसिजन की बलेंची 2 minus भुर किसे अग्टी निरई लिएक्तान हैं? यहाँ दिरक्तान रूँ की हैं? यह जाएग दीखान तो भी इलिक्त्टान दीखाँ के लग. because oxidation and reduction both the things are happening in this reaction so this is what this is a redox reaction अर फिर भी एक चिस तो माइन में डालो, की दस्टिंग जो है वो redox reaction टिके, because electron का आदान प्रदान चल रहा है है आपन आपन, now, वो redox reaction क्यो है, because iron is oxidized to A3 plus येस रही, and oxygen is reduced, it has gained electron to O2- दन, so assertion भी करेकते, reason भी करेकते, assertion भी करेकते क्स्टींचन है असर्स्टिंटिन भी आपन रही होग़ा, वो गोद, Assertion & reason आ त्रीु, and reason चर्कते प्रेक्टींचन ठीचन औग, Assertion दन फोगगयकलीर, okay वो तो टिकते है, 45th question, 45th question का का यह तै है, assertion the reaction in which a substance is decomposed in two or more simple substances, that know as decomposition reaction, after is the state of the energy okay, yes, so they absorb heat, they absorb energy in the form of heat, light or electricity and then they decompose fine, this is done this is the examples of, anothermic decomposition, but, but अनहां बग मरी खोतोग की क्योटी सें। आखिसो तामे कोती और चुद आँ आग्च neighborhood these are the perfect answers according to the following correct answers where the assertion and reason is not the correct explanation of what assertion, got it ? next question i have the mixture of hydrogen and chlorine is placed in the sun hydrogen chloride is formed yes very good when you put hydrogen and chlorine in the sun fire diffuser light is known as what reduction okay so these reactions are made up of what two half equations that one half reaction represents oxidation and another half reaction represents what it represents reduction that oxidation and reduction of an atom molecule or ion whatever you are using okay can also be defined in term of electrons yes the substance that gains electron the substance that gains electron is what is reduced okay to a lower oxidation state that means for example oxygen if oxygen gains electron then what will happen oxygen oxidation number will become what minus two here it was zero in elementary state always oxidation number is zero zero minus two got it so zero say minus two that means what happened oxidation number reduced one so in such a condition when any atom any ion if any electron is gaining that means its oxidation number is decreasing got it so gain of electron gain of electron is what reduction reduction correct i have told you in last video as well rig reduction is gain of electron so gain of electron is reduction here oxidation number decreases so along with that i also can write here that oxidation number reduces oxidation number reduces right right next line let's see what they are saying to us reduced to lower oxidation state fine as in oxidizing agent yes now see reduction is happening the substance is reducing right that will serve the purpose of oxidizing agent correct that is what then that is our oxidizing agent right correct this means this is the substance which gains electron that is our oxidizing agent substance which is gaining electron is our oxidizing agent okay similarly the substance which loses electron is what oxidize to higher oxidation state and that is called reducing agent yes substance loses electron for example sodium if sodium is losing electron to make sodium one positive what is it doing one electron donated it gives it to someone else so now what is that one electron has lost it has lost of electron loss of electron is what oxidation oil oxidation is loss of electron oxidation is loss of electron this is what oxidation now see what is happening here sodium oxidation number was zero as i told you in elementary state and its neutral atomic state oxidation number would be zero right now if it loses electron then oxidation number will be one plus as much as it is charged on ion that is how much its oxidation number is okay so on sodium one plus charge oxidation number is positive one pay attention oxidation number per sign there are negative and positive signs there are no signs in valency okay valency is just what the ability or the tendency to gain particular number of electron or to lose particular number of electron that's it no signs okay so what is happening here oxidation is happening okay because of what loss of electron electron is donated so how will this element work how will it work think about it if oxidation is happening of any element that means that element is serving the purpose of reducing agent that element is a reducing agent understand right so i'm writing here reducing agent done over paragraph reading is done now let's talk about questions this time in which of the following reaction hydrogen peroxide is acting as a reducing agent now what is the reaction here where hydrogen peroxide is acting as a reducing agent okay so for that if i see here then in ion chloride HCl and then hydrogen peroxide hydrogen peroxide is converting into water now first listen to me H2O2 is converting into what H2O now see what is happening loss of oxygen has happened right loss of oxygen has happened so what is the reduction has happened loss of oxygen so i can say that reduction has happened here reduction now reduction has happened if hydrogen peroxide then how did this happen what is the compound then how is it working in this reaction for us as an oxidizing agent oxidizing agent is working it is clear this is also not in the first reaction we do not need a reducing agent hydrogen peroxide second reaction with them cl2 plus h2O2 converts it converts into HCl and O2 now here there is a twist look H2O2 is converting into O2 correct now what is happening here loss of hydrogen can you say loss of hydrogen loss of hydrogen is what loss of hydrogen is your oxidation loss of hydrogen is what oxidation oxidation now if oxidation is happening hydrogen peroxide then how will this work like what is the function of hydrogen peroxide in our reaction it is serving the purpose of what reducing agent it is acting as a reducing agent right reducing agent clear so according to this second answer b answer should be correct here H2O2 is working as a reducing agent correct look now let's see next let's see hi react with H2O2 converts into H2O and IOD okay again H2O2 is converting into water right so now here it is oxidizing agent this is not our answer of course no answer we got the answer anyway okay see in fourth reaction also H2O2 is converting into H2O okay so what is happening here also what is happening here also reduction is happening right so this reducing agent can not be again understood the correct answer is b let's see what is on the 48th question in our reaction H2S and H2O2 okay here H2O2 converts into water and H2S is converting into sulphur indicates that what indicates that oh my god now we have discussed so much so here H2O2 is what is happening here it is losing oxygen that means what reduction that means it is our oxidizing agent right reduction so here H2O2 how is it working H2O2 is isn't oxidizing agent right okay now let's see oxidizing action of H2O2 yes see again oxidizing action of H2O2 H2O2 is showing us oxidizing action correct so correct answer should be what right oxidizing action of H2O2 once stop bc and d option see reducing nature of H2O2 reducing nature reducing nature or oxidizing nature means oxidizing agent or reducing agent that is oxidizing nature reducing nature that means it is reducing the other person understood it is so clear okay now acetic nature and alkaline nature have no question here because our neutralization reaction is not coming here salt and water have not been made okay so next we have last question of this paragraph is in acetic medium mn plus 7 changes to mn 2 plus okay it is oxidation by 3 electron reduction by 5 electron oxidation by 5 electron reduction by 3 electron now you will have to solve this question from yourself see what will happen from yourself i am not going to tell you okay think what will happen pause the video and think now i will not tell you who will tell me i will have to tell you right i am not responsible for all the questions let's see so mn 7 plus in acetic medium a chemical reaction is where okay that is happening in acetic medium what is happening in that reaction manganese is in that ionic state plus 7 okay now what did he do he is converting to mn plus 2 so it is converting from plus 7 to plus 2 what does he tell us these things i wrote in the reaction what is he telling you that he is trying to know that this manganese plus 7 ion has taken some electron okay some electron has taken some electron has taken 5 electrons look 5 negative sign will neutralize the 5 positive sign correct so then how many positive sign remaining will be 2 positive will remain right we had 7 positive ion now 5 electrons taken so how many will happen correct manganese so again what happened in this process gain of electron electron gain of electron has become gain of electron what do we call reduction reduction how many electrons have taken 5 electrons so which option is fit reduction by 5 electrons see it is also written in the option reduction by 3 electrons but we did not take 3 we took 5 in our medicine manganese 5 electrons in our manganese so then what will happen reduction by 5 electrons right come on good like this then we will talk about the next 10 questions in the next video today we have not done 49 questions 50 because all the questions of paragraph are over here right now in the next video we are going to start the next paragraph paragraph 2 okay come on so do not forget to see and you can bookmark the videos so that whenever you have to study these videos are available for you whenever you have to solve the questions then you quickly solve the questions from this video okay come on bye bye guys enjoy all the best