CSIR JUN 2018 Q.86.......The given product goes through 6π electrocyclic ring opening not 4π.....I might be wrong but 1 seems like the right option not 4
@@buddhadebmondal5531 but they given the product in the question and you don't get that in 4π....It's not about stability it's about what's provided in the question
@@buddhadebmondal5531 Theres no matter of stability since its in presence of light it follows kinetics.... If it was thermal your view is correct.... But the correct option is 4 although since its 4n pi ring opening ie,[3,3] ring opening....it follws dis rotation....
If you qualify the exam then you will be said LS qualified and if you get marks more than JRF Cutoff then you will be JRF. Cutoff varies but generally for Unreserved category is around 105+ marks for LS and 115+ marks for JRF
Sir ring opening at 26:51, please recheck.
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Rh2(OAc)4 as an catalyst is used for intra- and intermolecular cyclopropanation reactions. Name should Dirhodium tetraacetate
Your teaching and explonation is very nice bro.
Thanks buddy 😊
Wonderful🙏
Sir this series is very helpful for topic clearance and understanding..tq sir and do more such videos 🖤
Sure, I'll try 😊
Again simply loved your teaching bro... No words...
Nice explanation sir give more vedio
Sure 😊
Very effective question solving approach .keep it up.
Thank u frnd..u r very helpful and good teacher 👍👍🙏❤️
Thanks 😊
Thanq so much sir ...it is too much helpful...❤️❤️
CSIR JUN 2018 Q.86.......The given product goes through 6π electrocyclic ring opening not 4π.....I might be wrong but 1 seems like the right option not 4
no buddy, if the rxn occurs vai 6pi ring opening then by con mode the H will not be a suitable position to form a strain free ring
@@buddhadebmondal5531 but they given the product in the question and you don't get that in 4π....It's not about stability it's about what's provided in the question
Try to go from product to reactant you'll understand my point
I too feel a little confusion over there...
@@buddhadebmondal5531 Theres no matter of stability since its in presence of light it follows kinetics....
If it was thermal your view is correct....
But the correct option is 4 although since its 4n pi ring opening ie,[3,3] ring opening....it follws dis rotation....
Thank you sir for helping us.
Pls explain the ODC And OCT trick
Keep up the good and brilliant work Sir..
Thank you sir. excellent explanation sir.plz give more tricks
Sure 😊
Thank You so much sir....
Really helpful video sir. Thankyou so much...😀😀😀
For Question 86 .. I think Option 1 is right not option 4 kindly recheck it sir
Yes I also feel so
Ya me too
Thkuu sir ❤
Question number 88 , answer is 4 . Through carbene intermediate
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Thanks to you sir 🙏
Thank you sir.I also watched your video on micellar chemistry. Can you please make a video on colloidal chemistry? Plz sir.
Sure, I'll try 😊
86 no ka ans apne gelet kiya
wo 4n+2 system ring opening reaction hai, so in photochemical condition, conrotation is possible so the ans is no 1
You are correct Arun Mondal. I worked out the question and found that the answer is 1
Yea right
it is 4 pi system, so photochemically disrotation, that's why sir do this
Sir thank you for this. Best explanation. Please take such question for other topics also.
Thank you so much
TQ so much sir❤️
thankyou so much sir
Sir mai group elements just like hybridization structure and shape ki video bana do please
I'll try 👍
Thank you 🙏
Thanks a lot sir.....
Thank you sir
Thank you so much bro..
Very nice sir..Sir please suggest me any physical chemistry question answer book for JAM and NET exam..
Q.86 csir jun2018...it seems option 1 is correct not 4. The electrocyclic ring opening is 4n+2
Same query.. i feel that too
Yeah
I also have the same query
Same doubt
THANK YOU SIR.....
Please recheck the answer of 99...methyl in P is trans and con rotation is taking place and in the product it has to be cis.. Right?? 🤔
At 20:00 , Q99) how will you get that it's 4n+2 system, sir? 16π electrons are there in total if we count
number of pi electron taking part in the reaction are count only not for the whole system. el reacting is 6
I don't allow outside .so these videos prove helpful to me 🙏
Sir ek paper civil services ke chemistry optional 2 ko kr do please
Sir Do you have any information about the date of exam..??
Sir please provide the cheet sheet of tricks . Ie the 4npi n 4n+2. Pi rules
Does minimum no. Of ques to attempt from a particular section is compulsory in net exam
Q:88 csir Dec 2017. ...the direction of arrow in the STR is misleading.. ..
The answer to the last question (40) should be b option.
86 th question ans must be 1st option ....4n+2 system can be hv ...con rotatory .........please any one clarify me
Pls make another video on collecting the previous question.
After watching this ..i wont my reapeat mistakes
How many marks is required to qualify csir net without jrf or ls
If you qualify the exam then you will be said LS qualified and if you get marks more than JRF Cutoff then you will be JRF.
Cutoff varies but generally for Unreserved category is around 105+ marks for LS and 115+ marks for JRF
@@AllBoutChemistry if one has applied for jrf n he/she don't qualify for that then will the candidate get Ls if he fulfill the eligibility for it
@@alishakakkar6096 yes
Advertisement video s r coming in between too many🙄
Yes sir.please avoid advertisements too much
I guess even the last question is wrong, there should be 2 nodes, not 3.... Please check and rectify as many refer your video for guidance
subtitles?
Too much advertisements sir.these are disturbing our concentration.please avoid too much of advts.
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Thanq so much sir ...it is too much helpful...❤️❤️