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01:17
@Avka Even maths for me ;_;
01:28
I got 105 in chem yesterday bruhhhh
Chemistry my only hope saved me
@PolarBear Total?
Oh and you know what, whatever marks I lost.. THEY WERE SILLIES
@Dante ~260 sigh
They have so many questions wrongggggg
So plus minus according to that
So many in the sense? 5-4 in each paper?
3-4 yeah in maths and physics.
They have also messed up options which I got as answer ;-;
Oh, ok. That's a pretty good score I guess but of course not what you wanted.
Coordinate was messed up ;_;
I'm solving it, got very few in coordinate
01:33
I'm gonna try maths again today
And see if I get them
Probably my brain was again fried up yesterday
Oh, lol, you'll get'em all at home. Par exam hall me pata nahi kya ho jata hai ;_;
That's what ;-;
Fir toh if I want to get 60% in advanced I will have to score 80% at home
Umm, you can score way more than 60% right? 60% is around 2K rank ig
@Dante Yes, coaching papers aren't so easy so 60% is decently good :P
Oh yeah, fair enough.
02:08
Trigonometry (transformations, multiple-submultiple angles, compound angles) is being asked is almost every paper right?
Someone explain me 25 in that
@AdvilSell 26 is there in NCERT
Drawbacks of VBT
22 idk actinoids, didn;t study
for 20, -E is propotional to $1/n^2$
So as n increases, E also increases.
It decreases n magnitude, but since it has -ve sign, it increases.
25th is octadentate ligand right?
Max coordination number of 3d is 6
F block elements can exhibit higher coordination number
@Dante So is the answer I,II,III or I,III , I have marked I,II,III and the answer given is I,III(4th option)
VBT gives quantitative interpretation of magnetic data right? In boards we use to write electronic configuration, find number of unpaired electrons, magnetic moment etc.
@PolarBear how much according to resonance ?
02:44
@EshaManideep ~260-270
You?
120 (correcting the wrong questions) in Phy, 102-107 in Math, 105 in chem I guess
:o
Awesome!
Damn good
My accuracy went so high up, 💯.
1hour or each Phy and chem was worth it.
Same marks in chem xD
I did in 20 minutes
02:46
@PolarBear I am proud. Being a noob in chem, I got so much !
Physics damn I did mistakes
@PolarBear Legends.
@EshaManideep Noooob please
Is that KCN in DMSO correct ?
I did it with Iodine. My sir said i was correct
@EshaManideep 332 dude
I did with carbonyl
02:48
@PolarBear Any reasoning ?
What about that Cp Cv one of A and B gases
Both had Cv greater than 5R/2
@PolarBear Resonance don't have this question ?
But the difference for one was greater than R and lesser for the other
@AdvilSell No
Maybe they couldn't solve 😅
@EshaManideep okay
@EshaManideep $\large{LOL}$
02:50
Let's ask John Rennie sir.
@EshaManideep Not really. I didn't even think on it while solving so xD
@EshaManideep What did you mark?
@EshaManideep Can you write the question here please.
The ratios were weird
Gas A: Cp = 29 SI unit and CV= 22 SI unit
Gas B: Cp = 30 SI units and CV = 21 SI units
For one gas CV,Co were (in kJ/mol) 21,30. For another it was 22,29. What can you conclude about the other degrees of freedom known that both are diatomic
A) Both have one mode of vibration
B) A is rigid and B has mode of vibration
02:52
I was stunned to see that 45,60 angle question in physics
@EshaManideep Woah... It seems you will be exactly 💯 percentile this time!
C) B has no mode of vibration and A has one
D) A has one mode of vibration and B has two
@YUSUFHASAN Wrong, bora got somewhere around 350
@EshaManideep There was the legendary Nishant Abhangi in our shift too
Then my physics might drop to 115, depends on professor
@PolarBear Why ?? Why ???? I hate NTA
02:54
@YUSUFHASAN Hi
Ohh... What does this Bora guy eat for breakfast XD? He gave the last VMC mains as well (for fun it seems) got 355
Take a look at 10th one please.
I don't think Bora's getting 350
Or maybe he is
@PolarBear Take a look at his mock test marks^^
@PolarBear What at you talking ? His strength is math, we messed it up.
02:56
@EshaManideep His "strength*? Lol
He generally score 120 in AITS math
To you ? Lol
@EshaManideep He legend
Anyways, no more discussion on him. What do u guys say about he question ?
What did you mark?
@EshaManideep I would have marked C...as it's the most logical option
B has no mode of vibration and A has one
02:59
I also marked (C) but reso doesn't have this question lol
@EshaManideep What did you mark?
@EshaManideep Co? Cp you mean?
@EshaManideep C_v=fR/2 , so one with low C_v must have low degree of freedom meaning that B have lower degree of freedom , all option(except C) have more or equal degree of freedom as that to A....This is my reasoning Disclaimer :"this can be BS also"
What do you think about this question @YUSUFHASAN
@EshaManideep What questions do you feel are wrong in reso key?
03:05
Could someone explain me 10th one?
@Dante It's right just see solomons (aldehyde , Acetal formation part) The carbonyl carbon is most Electrophilic , and hence CN- attack there and then simple reduction of CN
Hmm
Quite confusing
@Dante True that I got it wrong tho.
Everything was perfect for Sn2, aprotic solvent, strong nucleophile, good LG
@AdvilSell Score?!
@Dante 25/28....according to reso
03:09
Nice!
If you multiply n matrices,
> I am dead. I felt the paper to be tough and spoiled it.
Says the guy who got 330
Ugh, how to write matrices in latex?
$a_{1,2}=n(n+1)/2$
$a_{1,1}=1$
$a_{2,1}=0$
Or you could write on paper and link the image
03:14
@PolarBear Idh a phone
$a_{2,2}=1$
$$\begin{pmatrix} 1 & 2 \\ 3 & 4
\end{pmatrix}.$$
>"\begin{pmatrix} 1 & 2 \\ 3 & 4
\end{pmatrix}.
@Dante ^^
$$\begin{pmatrix} 1 & 1+2+3..n \\ 0 & 1 \end{pmatrix}$$
@Dante Did you multiplied 2 or 3 and saw the pattern ?
03:18
Yeah
@AdvilSell Thanks!
@Dante Oh..okay , I did this but took time ....I am fuc**** weak at matrix multiplication
@AdvilSell Could you do coordinate in maths?
@Dante Almost all
@AdvilSell Wtf, are you high? What is meant by weak at matrix multiplication?
@AdvilSell Nice!
@Dante I take a lot of Fu****** time
03:20
@PolarBear Which question?
I always get confused while doing it
Oh
@Dante that 3D area question was interesting!
@AdvilSell The addition compound formed by nitrile in first step is quenched by water,i presume.. For Q10?
@AdvilSell triangle?
03:26
@Dante yup
@YUSUFHASAN no
didn't get it at first
Let me try again
So..? How did the O- formed in the Td complex get it's H?
number?
got it (the question)
@YUSUFHASAN I think H2/Ni
will do something
@PolarBear 8,15,18 and one more
24 ig, not sure of this
03:31
@AdvilSell Bro... You cannot quench by H2/Ni... Think of it physically.. The compound is adsorbed on the Ni surface,and H2 gas is passed so that H atoms attach to the pi bond.. There is no scope of ion formation here without solvent,and your quenching requires the homolytic cleavage of H2... Which is very unlikely
@YUSUFHASAN ^^
@YUSUFHASAN I know that , But didn't had any choice
oh fuck, nice one
Dumb me, was trying to find distance between line and point.
H2/Ni can only atach atomically to pi bonds in a pericyclic fashion.. No ions can be formed.. And i saw reso's soln.. What i say is,DMSO may be prepared in a slightly aqueous form as well.. Like,0.01% water but major DMSO.. So that could help in quenching
@Dante Lol
@YUSUFHASAN Maybe
@Dante More than electrophilicity.. To actually see this reaction... CN- is a hard nucleophile,while carbonyl carbon hard electrophilic centre... HSAB..boom
But v.v. hard to see in exam...Mostly people will do SN2 here... And they are also prolly justified.. Cuz HSAB is not at all for mains
03:36
oh yes
@AdvilSell Did you get 19th one at first?
I hate parabola + circle questions :/
@Dante Yeah
@EshaManideep Same ;-; I considered them wrong. I hope they are right.
@EshaManideep It should be 8, right?
@YUSUFHASAN The cp cv one I posted above
@AdvilSell Nice!
Gas A: Cp = 29 SI unit and CV= 22 SI unit
Gas B: Cp = 30 SI units and CV = 21 SI units
A) Both have one mode of vibration
B) A is rigid and B has mode of vibration
C) B has no mode of vibration and A has one
D) A has one mode of vibration and B has two
Oh and both are diatomic given
Also, @YUSUFHASAN Q.25
In the resonance chemistry shift of ours
03:51
@PolarBear Isn't is 6,8 ?
@PolarBear For Cp,Cv question.. Is the answer C?
@PolarBear Yes.. For 25 it is 6,8
@YUSUFHASAN For transition can we ever not expand it I mean yeah I haven't seen but just asking?
@YUSUFHASAN They haven't given in reso.
Why do you think so though?
@AdvilSell I found better way to do 19th :-)
Of course didn't get the idea at first.
My shift 19th?
Maths
yes, shift2
03:56
Demn I had wasted 5 minutes on that
But I had got the answer
I assumed the circle and two tangents to it we know
What did you do?
@Dante Well I did that okayish time , Let your method
Oh, I just found normal equation of parabola, y coordinate of circle will be 'r' obviously. Parametrically we can say $1+r/\sqrt2=r$
@PolarBear Well... I just wrote Cv for each gas as (5+x)R/2 and Cp as (7+x)R/2,equated them to their values and divided the equations.... For A i got a consistent solution of x just greater than 1..while for B i got a negative value of x... So C
@Dante Normal to parabola passes through centre :facepalm:
Why didn't I think of that
That's not something easily comes in mind when we have 2 minutes to solve.
03:59
Nice though quick answer
I had been trying for 10 mins
Oh, keep trying!
@YUSUFHASAN Ohhh, I see.
But it isn't very exact, right?
@PolarBear what did u get for that question?
Like for B does that really happen?
Negative x?
Nope.. Not exact
04:01
Why isn't it zero?
I marked (C) in the exam..
No it cant.. Hence no vibrational degree
Yeah, I thought the same still was a bit confused.
I mean.. I dont really know the physical significance of negative x.. Just that it is invalid.. Prolly JR sir can tell the meaning of negative x
Hmmm, Esha had pinged him for asking that. He isn't online yet.
Say
Yes
What removed
Oh okay. I will let my 'Yes' floating around
Okay, I'll keep my okay floating around
04:10
I posted Cp Cv question in PSS.
@PolarBear You wrote quite a formal letter while presenting your problem to JR sir..XD
04:27
Nvm, I can just take a glance at all of them.
@AdvilSell
first one
@Dante ya math was tuff too
@Dante Ya ? What's the problem
I'm getting second option
Ah damn
@Dante there is a x also
Didn't see the extra 'x' on RHS
Yeah got it, thanks
04:35
@YUSUFHASAN 1 account
This kind of stuff gives me vibes I'm going to screw up even easy questions in the exam ;-;
Heck gharwale hamesha bolte Hain stress kyun Leto ho mat lo stress
And woosh all of my stress disappears
Like I love being stressed
What removed
What say
@Avka Don't take stress
04:38
Thanks
I'm not stressed now
That's how you cure depression also
lol
Ba ba black sheep
Star warrsssaaa
05:04
I feel that the answer should be option 2. Does trans esterification take place in aprotic solvent like chloroform?
@AdvilSell
@Dante yo
Haven't studied Carboxylic acids yet, but never saw above ^ reaction (esterification with $CHCl_3$ reagent) is it there in solomons?
@Dante CHCl3 is not a reagent here but a solvent , I don't remember correctly if this (transesterification) is in solomons or not , but it must be
Oh, okay
05:20
@YUSUFHASAN Are you sure CN- is a hard nucleophile , Because This doesn't say so , If it isn't a hard nucleophile then will the reaction be affected like will it go with simple SN2 and do it with I ?
cc:@Dante @PolarBear @Abcd @Avka ^^
@AdvilSell I agree
@Avka with I being substituted ?
Yes
@Avka Okay :D
05:50
CN is at the borderline (clayden)
This question will also be probably bonus.
Both the reactions are rapid.
I don't think we have learnt enough to determine which one happens.
Although, cynohydrin formation is reversible.
But it's fast and the equilibrium is towards the product.
Got a notif of this question of mine having thousand views. Oh, the questions I used to have an year ago..
2
Q: Rank the following radicals in order of decreasing stability

PolarBearQuestion Rank the following radicals in order of decreasing stability Aromaticity makes a cyclic compund more stable. Here, 1 and 3 are aromatic since they follow Huckels rule(Or am I wrong here?). So, I thought maybe 3 is most stable followed by 1, then followed by 2 and 4(I dont kno...

It's been a long way.
Huckels rule on cyclohexane cough cough
Sure it has been
You asked stability of radicals and now you score 100+ in chem haha
Funny
Upvoted XD
06:01
Thanks my rep is now 699
@PolarBear Have 704
@AdvilSell thanka thanka
Chalo 47 days to go
@PolarBear What is your opinion on the trans esterification question with CHCl3 as solvent?
@AkshatJoshi I also got that wrong.
@PolarBear which one did you marked ?
06:11
D :P
I'm idiot
Total idiot
@PolarBear I see what you did
This, troposphere and the monomer one
I didn't know both of them
Who tf memorizes troposphere zmesosphere startosphere
Alsoo, wait. I forgot that there were only 28 questions in that.
Sigh sigh sigh
Kitne aa rhe hai ma'am
06:15
I am tired of messing up and trying again and again
@Avka Pata nahi. 260ish but even if ±5 questions it can go a lot down.
@PolarBear Way better than your last performance tho
I mean 1k ho jayega 260's mein
@PolarBear last mains
Oh mains
@Avka I guess 2k.
Jo bhi ho
Anyhow you're gunning for iitb any branch
10k toh nahi
So mains doesn't matter for you
06:18
Hmmm
Mains is backup for everyone
Like really any branch
You IIITH for sure?
Pharma bhi lw
@Avka No. Not any branch.
@PolarBear what no
06:19
After CS top one is EE. I don't want to go lower than that.
I if I don't get under 2k in advance only then
EE closing for normal is ~250.
Reservation?
lololol
I don't know what yet.
I will try my best. I don't want any damn reservation.
Check Kar lo
I want
06:20
Reservation se it's top 700. But isn't that too low. Like khud ki bhi respect rakhleni chahiye.
Reservation surely gives 'Backup'
which assures you
But I want rank.
Oh Lord it's 730
IITB CS for girls was closing at ~165 last year
XD XD
Double of normal
And this year they are going to increase reservation oh god
Cool man
Cool cool
What you aiming for?
Iitb cs
3
Lmao
06:26
Any idea what would be closing rank for IIT-H : AI general male?
I assume pretty similar to CS at IIT-H?
You could ping gaurang
At periodic table
Not IIIT avka
._.?
how
IIT H is introducing AI
@Abcd Yes, so any prediction of ranks?
Closing ranks general male?
06:29
@McSuperbX1 Can't say, no one can say. New branch so going to be less than CS of course.
@Abcd Good news for me lol xD
I feel many will be afraid to take up AI just because its super new
@McSuperbX1 Cool
@McSuperbX1 Yeah
I feel like I should just skip my mains.
ugh dedoonga
@AdvilSell learnt aminos ?
@AdvilSell ???
@Jasmine @YUSUFHASAN Score in the ppr ??
07:32
@Avka Very cool avka
What time has come people have to say closing ranks for 'General male' candidate
@PolarBear how much tym do you spend on advanced chemistry in ppr
All the recent papers I have solved were easy. So need to solve now. Then I'll say
In easy papers, it's even easier to complete advanced papers earlier than normal mains papers.
@Abcd Ya , sort of
@PolarBear Recent pprs includes?
@PolarBear Do you think advanced is actually easier than mains ?? cc: @AdvilSell
07:47
@Abcd IMHO yes
@AdvilSell wow cool
@Abcd Some Allen scores.
@Abcd Don't really know. It's more interesting for sure.
5
I'm solving RTPF now.
That paper of papers room
Same I am starting now...

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