Thanku mam.... College me pdhate h to itna nhi ata ..😅 apki vedio se turant aa jata h smjh me sare dobut clear ho jate h ... Thanku so much mam. 💞💞❤️❤️😍😍
Mm ur Edta method and alkalinity method video are very good. I got a clear concept on both the topic.Now I watch ur soda lime numerical video which clear my all doubts on this topic too. I was afraiding on remembering too many rekn on soda lime but ur formula to cal. soda and lime are awesome 😎. Thank u 🙏🙏very much mm
@@easyengineeringchemistry3057 I mean, will be sharing ur content.... Pardon!! Well I think that's the least I can do in exchange for ur Teaching, Thanks...
Now I have unserstood that noone can solve the any type numerical question without clear concept. Thanks a lot for clearing my concept. There are many of the students will have required this video. 😊
Practice Problem Answers: Ans 1 - Amount of lime = 15.096 kg ; Amount of soda = 4.24 kg Ans 2 - Amount of lime = 65.18 kg ; Amount of soda = 59.11 kg Correct ma'am?
No its multiplication factor is 100/122. For concept of multiplication factor check video ruclips.net/video/ggx6iVhNsLU/видео.htmlsi=Bl8WGciFPeM1JOdb If still have some doubt feel free to ask. Keep watching and sharing😊
HCO3- ions consume lime and produces CO3 - - ions so subtract from soda. It is not divided by 2. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing😊
Mam Aapne sab batad iya Main chezz toh batai nahi ki Yeh Multiplication Factor exam m denge ya Khud yad karo 😢Itna sare yad kaise karu Mam Agar Yad karna ho toh Btw my exam is on 26 july rgpv University Bhopal❤
sabhi yaad karne ki jarturat nahi hoti hai jo thode different hai loke Al2(SO4)3, HCO3- ,H+,OH- ,NaAlO2 in par thoda focus karna hota hai. aap nikal sakte hai. Multiplication factor concept ke liye Hardness and Its units video dekh ligiye. All the best for exam. Keep watching and sharing😊
Salts /impurities ka amount given hota hai lekin use CaCO3 equivalent me convert karna hota hai multiplication factor ka use karke. Agar que me amount CaCO3 equivalent ke term me diya ho ya hardness mention ho to direct lime soda ke formula me values rakh dete hai. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing😊
I will try. If you want video on any specific topic please mention here. Keep watching. Link for Numerical based on bomb calorimeter ruclips.net/video/cSJynQLe4bU/видео.html
For hardness calculation check related videos on channel ruclips.net/video/38Kk1T94e0E/видео.html ruclips.net/video/07VreG0Xnrc/видео.html Keep watching and sharing😊
NaAlO2 is subtracted in lime requirement as it produces OH- ions not in soda requirement. In soda requirement we subtract HCO3- ions as it produces CO3-- ions. Hope you got it. Keep watching.😊
@@sudhanshuwankhede Shayad kuch misprint hoga Aap koi dusari book dekhe. Video me jo formula hai wo sahi hai. NaAlO2 jab water se react karta hai to Al(OH)3 + NaOH banata hai aur OH- ions produce hote hai.Lime Ca(OH)2 bhi OH- ions produce karta hai. To jo OH- ions NaAlO2 se mil jate hai to utna amount lime ka kam dalna padta hai. Isi liye NaAlO2 ka amount lime me se subtract kiya jata hai. Hope you understand the logic. Keep watching.☺
Multiplication factor ke liye chemical equivalent ka concept use karte hai molecular weight ka nahi lekin yaha maximum case me charge +2 and - 2 hone se molecular weight aa jata hai lekin jaha charge balance nahi hota waha amount vary hota hai according to charge. Multiplication factor ka concept clear karne ke liye aap video" Hardness and its units" dekhiye. ruclips.net/video/ggx6iVhNsLU/видео.html If still have any doubt feel free to ask. Keep watching and sharing😊
Formula me jo (CO3)2- and OH - add kiya gaya hai wo tab karte hai jab softening process me humne lime soda excess amount me dala ho. Jab excess amount me lime soda dala jata hai to wo unreacted rah jata hai aur treated water me milta hai. To jab numerical me treated water analysis diya jata hai tab hum inhe add karte hai. Ise video me bhi explain kiya gaya hai. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing😊
Thanks for appreciation. You can remember formula by making some jingle as we do for periodic table. like for lime requirement Tika (temp ca+2) +Tuta Mag (2x temp Mg) + Par mag fel (per Mg Fe Al) +hai (H+)+ Hai cooo coo two (HCO3- + CO2)- Na all O two (NaAlO2) with 74/100 For Soda requirement PakKa Mag Fel (Perm Ca Mg Fe Al)+ Hai (H+) - Ha Ka o (HCO3 -) with 106/100 Hope you understand this. Keep watching.😊
Ca+2 ko permanent Calcium hardness consider karte hai isliye lime requirement me add nahi karte. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing😊
Ma'am ye same 1st wala numerical hamare college me previous year me aaya hai but lime aur soda ki purity nahi diya hai baki sabhi data same hai to use kaise solve kare ma'am
Karte hai kyuki jab NaHCO3 present hota hai to wo lime se react karta hai aur Na2CO3 banata hai to jitna amount lime ka is reaction me lagata hai utna add karte hai. Dusra jab OH ions water me aate hai to wo excess lime use karne ki wajah se aate hai to unhe bhi consider karte hai . Hope your doubt will be cleared if not feel free to ask.Keep watching and sharing😊
NaAlO2 ka CaCO3 equivalent 10 hai jise minus kiya gaya hai. Aap 24:20 min par check kare. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing videos☺
Ca+2 ko permanent calcium hardness consider kiya jata hai aur permanent calcium hardness lime consume nahi karti hai isliye ise lime me add nahi karte . permanent calcium hardness soda se react karti hai isliye ise sirf soda me add karte hai.Hope your doubt ill be cleared if not feel free to ask. Keep watching and sharing😊
Atomic weight 164 nahi liya hai multiplication factor 100/164 liya hai. Multiplication factor 100/(2x chemical equivalent) hota hai. Multiplication factor ke concept ke liye aap video hardness and its units dekh sakte hai ruclips.net/video/ggx6iVhNsLU/видео.html Hope your doubt will be cleared if not feel free to ask. Keep watching.
Thanks for watching. To convert any impurity into caco3 equivalent we have to use formula CaCO3 Eq.= (Mass of hardness producing substance or Impurity ) x Multiplication factor and Multiplication factor = 100/ 2x chemical equivalent of hardness producing substance or Impurity Multiplication factor for OH- = 100/ 2x17 =100/34 (O= 16 ,H= 1, Total OH =17) Similarly Multiplication factor for HCO3- = 100/ 2x61=100/122 61 is equivalent weight of HCO3- Multiplication factor for NaAlO2=100/2x82=100/164 82 is is equivalent weight of NaAlO2 DON'T USE FORMULA 100/MOLAR MASS for Multiplication factor. Hope your doubt will be cleared. Keep watching.
@@spritualquest108We use same formula for Ca+2 , Mg+2 also. M.F for Ca+2= 100/40 and Mg+2=100/24 Hope you got it if not feel free to ask. Keep watching and sharing😊
Ca+2 question me nahi diya gaya hai to iska matlab hai wo water me present nahi hai isliye use add nahi karege. Que. me jo salt ya ion diye jate hai unhe hi calculation me consider kiya jata hai. Lime se permanent Ca hardness remove nahi hoti hai to lime ke formula me pemmanent Ca add nahi hota hai. Hope your doubt will be cleared.Keep watching and sharing😊
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Thanku mam.... College me pdhate h to itna nhi ata ..😅 apki vedio se turant aa jata h smjh me sare dobut clear ho jate h ... Thanku so much mam. 💞💞❤️❤️😍😍
Thank you for appreciation. Keep watching.☺
Thank you beta
Video*
Chllll
Padte hai phir clg Mai bhi
Apke padane se bahut acha samajh me ata hai mam
Keep watching and sharing
Highly required video. Thankyou Mam 👍👍
Keep watching.
Mm ur Edta method and alkalinity method video are very good. I got a clear concept on both the topic.Now I watch ur soda lime numerical video which clear my all doubts on this topic too. I was afraiding on remembering too many rekn on soda lime but ur formula to cal. soda and lime are awesome 😎. Thank u 🙏🙏very much mm
Thanks for appreciation. Keep watching.🙂
Thank you so much ma'am... it's really helpful and I was able to clear my doubts
Glad to know. Keep watching and sharing😊
Your way of representation is excellent.
Thank you for appreciation. Keep watching and sharing😊
Thank you mam..nice explanation method samjh aa gya pura .. formula yaad nhi ho rha tha toh ush ka Fara bana liya😊
Thank you for appreciation. Keep watching and sharing😊
😂😂
@@satyendratiwari2172 bhai lagta hai kl chemistry ka exam h 🙂
Ma'am aap bahut achha samjhati h
Thank you so much. keep watching.😊
Thank you mam for this quality content❤
Thank you for appreciation. Keep watching and sharing😊
Now finally got the right video thank uuu so so much mammmmm❤❤❤❤❤
Thank you for appreciation. Keep watching and sharing videos☺
No, really what's with this channel and it's content, so underrated, Thanku so much...
Keep Teaching :)
So nice of you😊If you find my videos helpful then pls share my videos. Keep watching
@@easyengineeringchemistry3057 Aye! Captain, on it...
What do you mean??
@@ishaanmahajan4683 What it mean
@@easyengineeringchemistry3057 I mean, will be sharing ur content....
Pardon!!
Well I think that's the least I can do in exchange for ur Teaching, Thanks...
Now I have unserstood that noone can solve the any type numerical question without clear concept. Thanks a lot for clearing my concept. There are many of the students will have required this video. 😊
Glad to know. Keep watching and sharing😊
Thank you mam! 🙏
Keep watching and sharing😊
Thanq mam superb explanation
Thank you for appreciation. Keep watching and sharing😊
Nice work keep it up
Thanks for appreciation. Keep watching.
Ma'am , soda and lime both removes dissolved gases - Co2 .
But why you didn't considered Co2 in soda
Lime react with CO2 and convert it into CaCO3 but dosen't react with soda. Therefore, not considered within calculating amout to soda. Keep watching
Lot of thanks ma,am
Keep watching and sharing😊
Dhanyawad ma'am 🙏🙏🙏🙏
Keep watching and sharing videos☺
Thnx mam great explanation ❤
Thank you for appreciation. Keep watching and sharing😊
Practice Problem Answers:
Ans 1 - Amount of lime = 15.096 kg ; Amount of soda = 4.24 kg
Ans 2 - Amount of lime = 65.18 kg ; Amount of soda = 59.11 kg
Correct ma'am?
Ans 1. Lime= 18.056.57 kg, Soda=4.24Kg
Ans2. Lime = 65.7 Kg ,Soda = 59.11
Keep watching.
@@easyengineeringchemistry3057 maam, in first question, do we have to consider Fe2O3 also???
No Fe2O3 is not considered in calculation.
L=18.056 kg for Q. 1
@@easyengineeringchemistry3057 ok ma'am
@@ApurvPriyanshLuka 👍
Thanks a lot ma'am!!!
Keep watching and sharing😊
Tq so much ma'am ❤❤❤❤❤❤🎉🎉🎉🎉🎉😊😊😊😊😊
Keep watching and sharing😊
Very helpful mam😇😇
Glad to know. Keep watching.
thank you maam
Keep watching and sharing😊
thank you ma'am
Most welcome 😊
mam 20:54 mai HCO3- ka Multiplication factor 100/61 hona chahiye ... pls correct me if I am wrong
No its multiplication factor is 100/122. For concept of multiplication factor check video
ruclips.net/video/ggx6iVhNsLU/видео.htmlsi=Bl8WGciFPeM1JOdb
If still have some doubt feel free to ask.
Keep watching and sharing😊
ma'am why caco3 and mgco3 are considered temporary hardness producing salt in lime soda numerical
Because it is considered that these are produced from Ca(HCO3)2 and Mg(HCO3)2.
Keep watching and sharing😊
@@easyengineeringchemistry3057 thank you ma'am
Good writing maam
Thank you. Keep watching
I love you mam... Thanks for the video🥺❤️... Tomorrow is my exam 😐... And I'm watching this now😅🥲
Best of luck👍. Keep watching and sharing videos☺
Thank you
Always welcome. Keep watching☺
Thankyou mam 🙏
Keep watching and sharing😊
Mam in last question u used Hco3- (L-S)
But I think it's (L-S)/2
HCO3- ions consume lime and produces CO3 - - ions so subtract from soda. It is not divided by 2. Hope your doubt will be cleared if not feel free to ask. Keep watching and sharing😊
Mam nitrate se hardness hota h ya nahin
And carbonte se hardness hota h ya nahin
Please reply
Ca Mg nitrate permanent hardness and Ca Mg carbonate temporary hardness me consider karte hai.
Keep watching and sharing 😊
Mam Aapne sab batad iya Main chezz toh batai nahi ki Yeh Multiplication Factor exam m denge ya Khud yad karo 😢Itna sare yad kaise karu Mam Agar Yad karna ho toh
Btw my exam is on 26 july rgpv University Bhopal❤
sabhi yaad karne ki jarturat nahi hoti hai jo thode different hai loke Al2(SO4)3, HCO3- ,H+,OH- ,NaAlO2 in par thoda focus karna hota hai. aap nikal sakte hai. Multiplication factor concept ke liye Hardness and Its units video dekh ligiye. All the best for exam.
Keep watching and sharing😊
Mam I think you have to solve the numerical on the basis of theory rather than formula based.
I will try to make a video based on principle. Keep watching.😊
Mam mujhe doubt h kon sa salt kon sa hardness producce karega
Caco3
Ca(no3) 2
Fecl3
CaCO3 Temporary hardness
Ca(NO3)2 permanent
FeCl3 not produce any hardness.
Keep watching and sharing😊
Thnx... ma'am.....for such a good video!!...
Plz..come to our college ma'am 😅
Definitely, which college 🙂till then keep watching and sharing.
@@easyengineeringchemistry3057 Non of the other.....i.e. UNITED Group of Institute 🥲
Mam ques me ca ka ppm amount mention hote hey na or we have to find out it.
Salts /impurities ka amount given hota hai lekin use CaCO3 equivalent me convert karna hota hai multiplication factor ka use karke. Agar que me amount CaCO3 equivalent ke term me diya ho ya hardness mention ho to direct lime soda ke formula me values rakh dete hai. Hope your doubt will be cleared if not feel free to ask.
Keep watching and sharing😊
(Q.1) LR =18.056 kg and SR=4.24 Kg
(Q.2) LR= 65.702 Kg and SR= 59.109 kg
All correct. Keep watching.
Mam in lime requirement second question why have you not added the HCO3- equivalent value? As in lime formula hco3- equivalent is added
CaCO3 equivalent of HCO3 - i.e. 600 is added (check it at 24:08 min).Keep watching and sharing☺
nice mam❤❤❤❤❤❤❤
Keep watching and sharing😊
Mam one More doubt
Feso4.7h20 ka equivalent weight 278/2 lenge ya 278/1
N factor consider karege??
278/2 hoga.
@@easyengineeringchemistry3057 ok thanks ❤️
Maam please mke numericals special vdo for every topic of higher chemistry
I will try. If you want video on any specific topic please mention here.
Keep watching.
Link for Numerical based on bomb calorimeter
ruclips.net/video/cSJynQLe4bU/видео.html
Thanku ma'am
Keep watching 😊
Mam nacl 10 value how u got 10 mam?
10 ppm NaCl is given in question . It is not calculated.
Keep watching and sharing😊
Ma'am how can I calculate total hardness of water
For hardness calculation check related videos on channel
ruclips.net/video/38Kk1T94e0E/видео.html
ruclips.net/video/07VreG0Xnrc/видео.html
Keep watching and sharing😊
Kya karna hai jab percentage purity na diya ho tab bataiye ma'am please please please please please please please
In soda required we subtract NaAlO2 ....mam you didn't subtracted it
NaAlO2 is subtracted in lime requirement as it produces OH- ions not in soda requirement. In soda requirement we subtract HCO3- ions as it produces CO3-- ions.
Hope you got it.
Keep watching.😊
@@easyengineeringchemistry3057 mam SS Dara krke book hai engineering chemistry.. usme aisa hi diya hai NaAlO2 subtract kiya hai soda required me
@@sudhanshuwankhede Shayad kuch misprint hoga Aap koi dusari book dekhe. Video me jo formula hai wo sahi hai. NaAlO2 jab water se react karta hai to Al(OH)3 + NaOH banata hai aur OH- ions produce hote hai.Lime Ca(OH)2 bhi OH- ions produce karta hai. To jo OH- ions NaAlO2 se mil jate hai to utna amount lime ka kam dalna padta hai. Isi liye NaAlO2 ka amount lime me se subtract kiya jata hai.
Hope you understand the logic.
Keep watching.☺
mam 2nd ques me HCo3- aur NaAl2 ka Mol weight jo hai uska 2 times kyo hoga?
Multiplication factor ke liye chemical equivalent ka concept use karte hai molecular weight ka nahi lekin yaha maximum case me charge +2 and - 2 hone se molecular weight aa jata hai lekin jaha charge balance nahi hota waha amount vary hota hai according to charge.
Multiplication factor ka concept clear karne ke liye aap video" Hardness and its units" dekhiye.
ruclips.net/video/ggx6iVhNsLU/видео.html
If still have any doubt feel free to ask.
Keep watching and sharing😊
@@easyengineeringchemistry3057 thank you mam smjh aa gaya
Mam (CO3) 2- soda me q liya h aapne??
Formula me jo (CO3)2- and OH - add kiya gaya hai wo tab karte hai jab softening process me humne lime soda excess amount me dala ho. Jab excess amount me lime soda dala jata hai to wo unreacted rah jata hai aur treated water me milta hai. To jab numerical me treated water analysis diya jata hai tab hum inhe add karte hai. Ise video me bhi explain kiya gaya hai.
Hope your doubt will be cleared if not feel free to ask.
Keep watching and sharing😊
Amazing, informative video mam 🤍🤍
Thank you.🙂
Ma'am exam me multiplication factor Diya hota hai kya???
Nahi, multiplication factor aapko yaad karna hote hai ya phir aap calculate bhi kar sakte hai.
Keep watching.☺
Only SO4 diya ho to isme kya considered karna h?
Not considered in calculation. Jo ions and salts formula me hai wo hi consider karna hai. Keep watching and sharing😊
Mam Fe2O3 kiss type ka hardness hoga
Fe2 O3 hardness produce nahi karta hai to agar que. me diya ho to use calculation me include nahi karege.
Keep watching and sharing 😊
In the last question why havent you minus NaAlO2 in soda required?
Because NaAlO2 does no t produce CO3 - - ions
Keep watching and sharing😊
Mam is there any trick to remember the formula? It's very lengthy to learn :( btw the video was awesome 👍
Thanks for appreciation.
You can remember formula by making some jingle as we do for periodic table.
like for lime requirement
Tika (temp ca+2) +Tuta Mag (2x temp Mg) + Par mag fel (per Mg Fe Al) +hai (H+)+ Hai cooo coo two (HCO3- + CO2)- Na all O two (NaAlO2)
with 74/100
For Soda requirement
PakKa Mag Fel (Perm Ca Mg Fe Al)+ Hai (H+) - Ha Ka o (HCO3 -) with 106/100
Hope you understand this.
Keep watching.😊
@@easyengineeringchemistry3057 thnk u very much mam😄
Always welcome😊
@@easyengineeringchemistry3057 mam Otto Hoffman method pr video upload kr dijiye plz
I will try to upload by the next week.
keep watching.
Mam question mai feso4.7h20 given hai as coagulant toh lime and soda dono mai add hoga??
Ha ye dono me add hoga. Keep watching and sharing😊
@@easyengineeringchemistry3057 ok thank you so much
Maam 2 question me ca^+2 add kyu ni kiya,ca^+2 to temporary calcium hota hai
Ca+2 ko permanent Calcium hardness consider karte hai isliye lime requirement me add nahi karte. Hope your doubt will be cleared if not feel free to ask.
Keep watching and sharing😊
mam can u please provide the pdf notes of water chemistry... it will be very helpfull... Jha tk apne abhi tk pdhaya h uske notes pdf krdo mam plz
I am trying to upload notes pdf link on community post. Keep watching and stay tuned.
Ma'am ye same 1st wala numerical hamare college me previous year me aaya hai but lime aur soda ki purity nahi diya hai baki sabhi data same hai to use kaise solve kare ma'am
percentage purity 100% man lenge to 100 /% purity =1 ho jayega is liye ye term neglect kar ke calculate karte hai.
Keep watching and sharing😊
@@easyengineeringchemistry3057 thanks ma'am
Mam lime ke formula me NaHCo3 and OH- add nahi hota na
Karte hai kyuki jab NaHCO3 present hota hai to wo lime se react karta hai aur Na2CO3 banata hai to jitna amount lime ka is reaction me lagata hai utna add karte hai. Dusra jab OH ions water me aate hai to wo excess lime use karne ki wajah se aate hai to unhe bhi consider karte hai . Hope your doubt will be cleared if not feel free to ask.Keep watching and sharing😊
Ma'am molecular orbital prr video banaiye plzz ma'am
I will try to upload. Keep watching.
Mam last k example me NaAlo2 ko apne consider q nhi kiya
NaAlO2 ka CaCO3 equivalent 10 hai jise minus kiya gaya hai. Aap 24:20 min par check kare. Hope your doubt will be cleared if not feel free to ask.
Keep watching and sharing videos☺
Maam ye q2 mei ca2+ ko consider kyu nahi kiya?
Ca+2 ko permanent calcium hardness consider kiya jata hai aur permanent calcium hardness lime consume nahi karti hai isliye ise lime me add nahi karte . permanent calcium hardness soda se react karti hai isliye ise sirf soda me add karte hai.Hope your doubt ill be cleared if not feel free to ask. Keep watching and sharing😊
Mam app second question me kaise sodium aluminate ka atomic weight 164 likh diya hai
Atomic weight to 81 hota hai na
Atomic weight 164 nahi liya hai multiplication factor 100/164 liya hai. Multiplication factor 100/(2x chemical equivalent) hota hai. Multiplication factor ke concept ke liye aap video hardness and its units dekh sakte hai
ruclips.net/video/ggx6iVhNsLU/видео.html
Hope your doubt will be cleared if not feel free to ask. Keep watching.
Mam will u please upload the pdf of notes
I am trying to upload notes pdf link on community post. Keep watching and stay tuned.
Mam how you write OH- =34,hco3- =122,NaAlO2=164
Thanks for watching.
To convert any impurity into caco3 equivalent we have to use formula
CaCO3 Eq.= (Mass of hardness producing substance or Impurity ) x Multiplication factor
and
Multiplication factor = 100/ 2x chemical equivalent of hardness producing substance or Impurity
Multiplication factor for OH- = 100/ 2x17 =100/34
(O= 16 ,H= 1, Total OH =17)
Similarly
Multiplication factor for
HCO3- = 100/ 2x61=100/122
61 is equivalent weight of HCO3-
Multiplication factor for NaAlO2=100/2x82=100/164
82 is is equivalent weight of NaAlO2
DON'T USE FORMULA
100/MOLAR MASS
for Multiplication factor.
Hope your doubt will be cleared.
Keep watching.
why not do this for ca+ , mg+ or etc@@easyengineeringchemistry3057
@@spritualquest108We use same formula for Ca+2 , Mg+2 also.
M.F for Ca+2= 100/40 and Mg+2=100/24
Hope you got it if not feel free to ask. Keep watching and sharing😊
16:28 ma'am , book me yaha pe (Ca)+2 bhi consider kiya hai jisse iss sum me 25 add honge..plz explain
Ca+2 question me nahi diya gaya hai to iska matlab hai wo water me present nahi hai isliye use add nahi karege. Que. me jo salt ya ion diye jate hai unhe hi calculation me consider kiya jata hai. Lime se permanent Ca hardness remove nahi hoti hai to lime ke formula me pemmanent Ca add nahi hota hai. Hope your doubt will be cleared.Keep watching and sharing😊
Koi mujhe pls batado issa samajna sa pehla kya kare
Lime soda ki theory aur functions of lime soda pado.
i.e 15.3 kg
Answers
(Q.1) LR =18.056 kg and SR=4.24 Kg
(Q.2) LR= 65.702 Kg and SR= 59.109 kg
Keep watching☺
what is the answer of q2?
Ans.2 LR= 65.702 Kg and SR= 59.109 kg
Keep watching.
bc 2 hours ke baad exam aur kya padhu kya nahin kuch samjh nahi aa raha😔😂😂😂
Kaisa hua exam? Keep sharing to new batch😊
Good.
You can also like chemistrybydramitsharms
Thank you.
Thank You Mam
Always welcome. Keep watching and sharing videos☺