qn :)

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in ur qn der will be 8 str.
@heena , Tip : don't make it linear

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ok and i got 8 str
but here u see three bonds mean they are in same plane
apoorv bhaiya jb tk shivam is posting or replying y dont u post qn for me ??
It is @heena, E and Z for each bond
hey par apne to pucha how many str is posible for GI y kb pucha k kya h yeh :/
So combining many patterns like E,E,E E,E,Z E,Z,E E,Z,Z Z,E,E Z,E,Z Z,Z,E Z,Z,Z We get 8 as the answer . @hheena you are right. @apoorvk won't minding having a check
wow apne str kese nikale? i mean combination ??
and u knw its time consuming a lot :? dont try to evr to find it but nikala kese mje itna bta do bs :P
yeah you folks are right.
i have only 15 mins :O at 6 i have to leve chem hour over :P
so plz nxt qn or y combo kese nikala mene aj tj ni nikala :P
@apoorvk bhai will give one :D
kya arrey acha mje sirf combo btao kese nikalte h ?? baki mje ata h k str kese nikalte h :P
heellloo koi kuch to bolo acha ek last qn do sbse tuff :)
anyone plzzz :)
i m going thank you for ur precious time :))
@apoorvk, I will give you medal in advance for explaining :P
lol selfish and lazy shivam :P mje ata h m to u hi puch rhi ti :P
Okay, let me post a 5 question test for you. Each question has one star at stake (if you get a question half right, you get half-a-star, and so on.) INSTRUCTIONS: For (1) state if a GI is possible and calculate the no. of GI's, if any. For (2-3) calculate the no. of POS in the structure. |dw:1337430444045:dw| 4. State if the the following contains any plane of symmetry, and how many if any. (a) A ceiling fan (three winged) (b) A screw. 5. Will the following compound have OI's?|dw:1337430262226:dw| You have 8 minutes - TIME STARTS NOW!
ha vo to h par he is typin or not dunno anyways bye bye :P and apoorv bhaiya rhne do mje pta h y so dnt worry
Time is ticking...
Tick tock tick tock...
1- no GI 2 1 POS 3-1 POS both 2 and 3 have sasndwich 4-sandwich plane 5-no POS
4 has two parts.
OI ni parha
yea 4 k second part no POS
by mistake i typed 5 point
what is sandwich POS? acording to you?
sandwich uhhmm.. kese btao :O or cieling fan m sirf fan k wings le kr btana h na??
say quick agr ceiling fan m wing k sat usk stalk bhit lena h to den it will have no POS
and by POS i mean sandwich plane m present h :)
okay just calculate the POS in no. 5
no POS in 5
sanwich means slice cut right? okay I get that.
yea slice cut :) mje smj m ni a rha tha m bolu kese as not gettin any word to xplain :)
heena ,good for all except first one. You first answer seems wrong to me
may i knw my results plzz??
y if u see the str shivam |dw:1337431264067:dw| if we try to cut it both the half will be different
Hmm Okay. Results time: 1 - ✘ 2 - ✔ 3 - ✘ 4(a) - ✘ (b) ✔ 5 ✔
Now now. Shivam will explain #1. The rest, I will.
1 st one is wrong because of axial and equatorial isomerism is possible
if that's okay with you, Shivam?
|dw:1337431392545:dw|
wat is axial and equatorial isomerism? and @apoorvk y 4(a) is wrong?
ok get it y 1 is wrong :)
y 4(a) i wrong there is preence of sanwich plane so POS is possible :/
plz quick ??
@apoorvk , why 3rd one is wrong ?? There is only one PS as far as I can see
*POS
yea and reason for 3 too :P but first tell me abu 4(a)
According to me, 4(a) has no plane of symmetry
yea as xplained by u guys before 3 one i not havin POS :P
there is plane of symmetery see the fan and if u cut it from sandwich plane u ll get eqauly half as mention only wing
Sorry. Didn't realize that. IN that case you will have 3 plane POS for 4(a)
|dw:1337431781756:dw|
xactly :O my ans 4 (a) is right (:
Wait. Let's hear @apoorvk 's point of view.
apoorv y dint u tel us the reason ?? liten i dont have much time to wait for ur ans :/
A fan blade actually looks like this http://ars.sciencedirect.com/content/image/1-s2.0-S0378778811001435-gr6.jpg therefore no POS
OMG @apoorvk , that is too much :P
yea it is but new thing for me nice qn :) :) i ll ask thi qn to my ir deifinitely :D :D
But nonetheless, pretty interesting question :)
thnQ bhaiya and nw confirm wala bye and bhaiya plz blue aye to bta dena :)
as for #3, cyclopentane actually is a symmetrical molecule - all angles are equal. so it has 6 POS actually.|dw:1337432051112:dw|
told u der is slice :/ : /
@apoorvk , you should have mentioned the word cyclopentane :/
anyways thnQ for the qn paper and i get the reult mje cyo qn p dhyan de kr jana hoga :P m bhut silly mitake kr ri hu usme hmm....
*cylco=cyo
That structure can only mean cyclopentane - it is a way to trick students (considering that the figure drawn is never exact actually)
@apoorvk , just kidding. But very careful and thoughtful questions @apoorvk :)
Thanks for this chem-o-organic quiz :D
but apoorv i m till confuse how POS present in it :? i mean cyclo pent afr hm str dekhe to spr hybrdised h or a i shown jb cut krenege to equal ni mil rha :O
sp3 hybridised h sb
|dw:1337432418449:dw|
what does slice mean ??
i dont find any POS here if we cut sandwich or in any way as u shown it not correct |dw:1337432528787:dw|
Hmm.. that makes me think - yes you're right - I dunno what I was thinking. Yes, then there would be just 1 POS - from the mid (not sandwich)- Silly me.
slice mean sandwich
You mean cutting along the plane of cyclopentane ?
1 POS no there is no POS see carefully once again plzz if we cut in sandwich too there will be up and down H not in same side
|dw:1337432620888:dw|
3-D lateral view - try to visualise that.
that the xact str i thought wen i was answering suddenly dunno wat happens to me i get agree wid u :O really kitni bhudhu hu m :O yes 1 POS is there :)
me too - the asker himself is wrong :/
hmm.... ehnce proved i hate organic :D
*hence
OMG, I love organic but I can never find the right answwer :P
@heena , well done. Good enough for organic. But @apoorvk no need to be said. You gave awesome questions @heena , best of luck for tomorrow's exam
to be *sad
All the best heena.
@apoorvk how many POS is posible in the str.? |dw:1337499005255:dw|
:'( mene aj bhut -ve kr li :O khushi khushi m :'( :'(
I think this will be zero - because the surrounding cyclo-propane rings are not in plane exactly, they are tilted at a some angle because there is enormous steric-repulsion from the other cyclo-propane groups. yes, I say '0'.
Don't worry, resolve the paper and check you mistakes.
bhaiya u aid fan k wings or is str m kya difference h?? dono m POS ni honi chiye na y qn aya tha or my fan k str imagine krk zero tik kr di jbk ans galaat h :O :O
mene paper solve kr liya tbhi to bol ri hu :'( meri rank pta ni kya hoga or aj to dad ne meri rank list mangai h :(
th fir answer 3 hai kya? yes bilkul sahi socha - this is like that fan blade thing
ni ans 2 h :(
bhaiya mene galat kr diya or rank list al a jayegi jime bhut -ve k h mene mje bhut darr lag rha h :'(
Don't worry it's only a eview test - aur bahut se test honge and what matter is the finals - abhi saare mistakes kar lo - baad mein mat karna simple :) And is question mein mujhe lagta hai ki: ek secondary ring primary ring ke plane mein hoga and baaki do perpendicular - tabhi answer 2 ho sakta hai - otherwise I feel ki they posted it wrong.
mje ni pata kal jb paaper dicuss hoga to pta chl jayega and u knw mene ephli br around 20-ve kiya h or dad voi rank lit dekhna chte h agr unhone dekha 20-ve mje bhut darr lag rha h :'(
Don't worry maine kya bola - ab aage ki socho, jo ho gaya, ho gaya,
delete?
bye .. ttyl
nvm
bye

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