Dear Students, Hope your JEE Mains 2015 Exams went well and you all are awaiting the answer keys to check your performance. Like every year, I'm going to upload all the answer keys ASAP well before any other institute in India. Do check yours and let others know. Check this page for regular updates on JEE Advanced 2015 Answer key, Detailed Solutions, Paper Analysis and Cut off Expectations. Credits: Chemistry Section: By Me i.e. Hridesh Kumar Shrotriya, HoD Chemistry, Cambridge Edupreneurs Physics Section: By Mr. Ram Bhatia, MD Cambridge Edupreneurs, Udaipur Maths Section: By Mr. Gaurav Yadav, HoD Mathematics, Cambridge Edupreneurs, Udaipur You can Check JEE Mains 2015 Answer key, Detailed Solutions, Paper Analysis and Cut off Expectations also on: 1. on our Website: www.cepl.ac.in 2. on our FB Page: JEEnius at Cambridge...
can u please help me with question no. 12?
ReplyDeleteyour website is very nice ....]
the level of organic chemistry questions is bit difficult....
your help is a must....
thanks tanaz for your appreciation.... in Q 12 the first step leading to P is E1 reaction which lead us to product mentioned in option(C)which in turn isomerises to option (B) as it is aromatic and much more stable :)
Deletemay i post the answers of organic chemistry question will u verify they are correct or not .because we reach correct answers but we may be conceptuallty wrong and it will help others also
ReplyDeleteyes you are most welcome... I'd appreciate that and will let you know asap in case of conceptual error :)
Deletesir i am struck on question no. 27
ReplyDeleteThe unexpected product will be by bimolecular reduction(Free radical based)followed by rearrangement leading to the product given in answer... give it a try once again...
Deletei did not get u sir
Deletei searched the entire web and referred the ques to my chemistry teacher she did not get the question only??/
Deletei referred nptel programme
Deleteno answer there also sir
Deletesir waiting for answer and explanation and mechanism q no. 27
Delete@all- as the compound is having 2 carbonyl group the metal will provide 1 electron each to both of them and a pinacol will be formed first which will rearrange to a pinacolone in presence of acid. After pinacolone's normal reduction you will get your unexpected product... If still you are not getting it than let me know...
Deletequestion 19
ReplyDeletein presence of HBF4 a carbocation Ph3C+ will be formed which will add up on Phenol via Electrophillic substitution reaction leading to the product :)
Delete