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heena

  • 3 years ago

qn :)

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  1. heena
    • 3 years ago
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    in ur qn der will be 8 str.

  2. shivam_bhalla
    • 3 years ago
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    Continuing from http://openstudy.com/study#/updates/4fb7745be4b05565342d0605

  3. shivam_bhalla
    • 3 years ago
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    @heena , Tip : don't make it linear

  4. heena
    • 3 years ago
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    ok and i got 8 str

  5. heena
    • 3 years ago
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    but here u see three bonds mean they are in same plane

  6. heena
    • 3 years ago
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    apoorv bhaiya jb tk shivam is posting or replying y dont u post qn for me ??

  7. shivam_bhalla
    • 3 years ago
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    It is @heena, E and Z for each bond

  8. heena
    • 3 years ago
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    hey par apne to pucha how many str is posible for GI y kb pucha k kya h yeh :/

  9. shivam_bhalla
    • 3 years ago
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    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

  10. shivam_bhalla
    • 3 years ago
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    *@heena

  11. heena
    • 3 years ago
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    wow apne str kese nikale? i mean combination ??

  12. heena
    • 3 years ago
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    and u knw its time consuming a lot :? dont try to evr to find it but nikala kese mje itna bta do bs :P

  13. apoorvk
    • 3 years ago
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    yeah you folks are right.

  14. heena
    • 3 years ago
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    i have only 15 mins :O at 6 i have to leve chem hour over :P

  15. heena
    • 3 years ago
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    so plz nxt qn or y combo kese nikala mene aj tj ni nikala :P

  16. shivam_bhalla
    • 3 years ago
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    @apoorvk bhai will give one :D

  17. heena
    • 3 years ago
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    kya arrey acha mje sirf combo btao kese nikalte h ?? baki mje ata h k str kese nikalte h :P

  18. heena
    • 3 years ago
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    heellloo koi kuch to bolo acha ek last qn do sbse tuff :)

  19. heena
    • 3 years ago
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    anyone plzzz :)

  20. heena
    • 3 years ago
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    i m going thank you for ur precious time :))

  21. shivam_bhalla
    • 3 years ago
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    @apoorvk, I will give you medal in advance for explaining :P

  22. heena
    • 3 years ago
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    lol selfish and lazy shivam :P mje ata h m to u hi puch rhi ti :P

  23. apoorvk
    • 3 years ago
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    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!

  24. heena
    • 3 years ago
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    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

  25. apoorvk
    • 3 years ago
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    Time is ticking...

  26. shivam_bhalla
    • 3 years ago
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    Tick tock tick tock...

  27. heena
    • 3 years ago
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    1- no GI 2 1 POS 3-1 POS both 2 and 3 have sasndwich 4-sandwich plane 5-no POS

  28. apoorvk
    • 3 years ago
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    4 has two parts.

  29. heena
    • 3 years ago
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    OI ni parha

  30. heena
    • 3 years ago
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    yea 4 k second part no POS

  31. heena
    • 3 years ago
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    by mistake i typed 5 point

  32. apoorvk
    • 3 years ago
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    what is sandwich POS? acording to you?

  33. heena
    • 3 years ago
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    sandwich uhhmm.. kese btao :O or cieling fan m sirf fan k wings le kr btana h na??

  34. heena
    • 3 years ago
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    say quick agr ceiling fan m wing k sat usk stalk bhit lena h to den it will have no POS

  35. heena
    • 3 years ago
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    and by POS i mean sandwich plane m present h :)

  36. apoorvk
    • 3 years ago
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    okay just calculate the POS in no. 5

  37. heena
    • 3 years ago
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    no POS in 5

  38. apoorvk
    • 3 years ago
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    sanwich means slice cut right? okay I get that.

  39. heena
    • 3 years ago
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    yea slice cut :) mje smj m ni a rha tha m bolu kese as not gettin any word to xplain :)

  40. shivam_bhalla
    • 3 years ago
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    heena ,good for all except first one. You first answer seems wrong to me

  41. heena
    • 3 years ago
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    may i knw my results plzz??

  42. heena
    • 3 years ago
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    y if u see the str shivam |dw:1337431264067:dw| if we try to cut it both the half will be different

  43. apoorvk
    • 3 years ago
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    Hmm Okay. Results time: 1 - ✘ 2 - ✔ 3 - ✘ 4(a) - ✘ (b) ✔ 5 ✔

  44. apoorvk
    • 3 years ago
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    Now now. Shivam will explain #1. The rest, I will.

  45. shivam_bhalla
    • 3 years ago
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    1 st one is wrong because of axial and equatorial isomerism is possible

  46. apoorvk
    • 3 years ago
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    if that's okay with you, Shivam?

  47. shivam_bhalla
    • 3 years ago
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    |dw:1337431392545:dw|

  48. heena
    • 3 years ago
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    wat is axial and equatorial isomerism? and @apoorvk y 4(a) is wrong?

  49. heena
    • 3 years ago
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    ok get it y 1 is wrong :)

  50. heena
    • 3 years ago
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    y 4(a) i wrong there is preence of sanwich plane so POS is possible :/

  51. heena
    • 3 years ago
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    plz quick ??

  52. shivam_bhalla
    • 3 years ago
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    @apoorvk , why 3rd one is wrong ?? There is only one PS as far as I can see

  53. shivam_bhalla
    • 3 years ago
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    *POS

  54. heena
    • 3 years ago
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    yea and reason for 3 too :P but first tell me abu 4(a)

  55. shivam_bhalla
    • 3 years ago
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    According to me, 4(a) has no plane of symmetry

  56. heena
    • 3 years ago
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    yea as xplained by u guys before 3 one i not havin POS :P

  57. heena
    • 3 years ago
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    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

  58. shivam_bhalla
    • 3 years ago
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    Sorry. Didn't realize that. IN that case you will have 3 plane POS for 4(a)

  59. heena
    • 3 years ago
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    |dw:1337431781756:dw|

  60. heena
    • 3 years ago
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    xactly :O my ans 4 (a) is right (:

  61. shivam_bhalla
    • 3 years ago
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    Wait. Let's hear @apoorvk 's point of view.

  62. heena
    • 3 years ago
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    apoorv y dint u tel us the reason ?? liten i dont have much time to wait for ur ans :/

  63. apoorvk
    • 3 years ago
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    A fan blade actually looks like this http://ars.sciencedirect.com/content/image/1-s2.0-S0378778811001435-gr6.jpg therefore no POS

  64. shivam_bhalla
    • 3 years ago
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    OMG @apoorvk , that is too much :P

  65. heena
    • 3 years ago
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    yea it is but new thing for me nice qn :) :) i ll ask thi qn to my ir deifinitely :D :D

  66. shivam_bhalla
    • 3 years ago
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    But nonetheless, pretty interesting question :)

  67. heena
    • 3 years ago
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    thnQ bhaiya and nw confirm wala bye and bhaiya plz blue aye to bta dena :)

  68. apoorvk
    • 3 years ago
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    as for #3, cyclopentane actually is a symmetrical molecule - all angles are equal. so it has 6 POS actually.|dw:1337432051112:dw|

  69. heena
    • 3 years ago
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    told u der is slice :/ : /

  70. shivam_bhalla
    • 3 years ago
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    @apoorvk , you should have mentioned the word cyclopentane :/

  71. heena
    • 3 years ago
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    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....

  72. heena
    • 3 years ago
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    *cylco=cyo

  73. apoorvk
    • 3 years ago
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    That structure can only mean cyclopentane - it is a way to trick students (considering that the figure drawn is never exact actually)

  74. shivam_bhalla
    • 3 years ago
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    @apoorvk , just kidding. But very careful and thoughtful questions @apoorvk :)

  75. shivam_bhalla
    • 3 years ago
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    Thanks for this chem-o-organic quiz :D

  76. heena
    • 3 years ago
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    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

  77. heena
    • 3 years ago
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    sp3 hybridised h sb

  78. apoorvk
    • 3 years ago
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    |dw:1337432418449:dw|

  79. shivam_bhalla
    • 3 years ago
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    what does slice mean ??

  80. heena
    • 3 years ago
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    i dont find any POS here if we cut sandwich or in any way as u shown it not correct |dw:1337432528787:dw|

  81. apoorvk
    • 3 years ago
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    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.

  82. heena
    • 3 years ago
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    slice mean sandwich

  83. shivam_bhalla
    • 3 years ago
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    You mean cutting along the plane of cyclopentane ?

  84. heena
    • 3 years ago
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    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

  85. apoorvk
    • 3 years ago
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    |dw:1337432620888:dw|

  86. apoorvk
    • 3 years ago
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    3-D lateral view - try to visualise that.

  87. heena
    • 3 years ago
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    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 :)

  88. apoorvk
    • 3 years ago
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    me too - the asker himself is wrong :/

  89. heena
    • 3 years ago
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    hmm.... ehnce proved i hate organic :D

  90. heena
    • 3 years ago
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    *hence

  91. shivam_bhalla
    • 3 years ago
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    OMG, I love organic but I can never find the right answwer :P

  92. shivam_bhalla
    • 3 years ago
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    @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

  93. shivam_bhalla
    • 3 years ago
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    to be *sad

  94. apoorvk
    • 3 years ago
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    All the best heena.

  95. heena
    • 3 years ago
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    @apoorvk how many POS is posible in the str.? |dw:1337499005255:dw|

  96. heena
    • 3 years ago
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    :'( mene aj bhut -ve kr li :O khushi khushi m :'( :'(

  97. apoorvk
    • 3 years ago
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    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'.

  98. apoorvk
    • 3 years ago
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    Don't worry, resolve the paper and check you mistakes.

  99. heena
    • 3 years ago
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    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

  100. heena
    • 3 years ago
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    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 :(

  101. apoorvk
    • 3 years ago
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    th fir answer 3 hai kya? yes bilkul sahi socha - this is like that fan blade thing

  102. heena
    • 3 years ago
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    ni ans 2 h :(

  103. heena
    • 3 years ago
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    bhaiya mene galat kr diya or rank list al a jayegi jime bhut -ve k h mene mje bhut darr lag rha h :'(

  104. apoorvk
    • 3 years ago
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    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.

  105. heena
    • 3 years ago
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    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 :'(

  106. apoorvk
    • 3 years ago
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    Don't worry maine kya bola - ab aage ki socho, jo ho gaya, ho gaya,

  107. apoorvk
    • 3 years ago
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    delete?

  108. heena
    • 3 years ago
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    bye .. ttyl

  109. apoorvk
    • 3 years ago
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    nvm

  110. apoorvk
    • 3 years ago
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    bye

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