In a special condition addition of HBr to unsymmetrical alkene takes place contrary to Markovnikov's rule.
What is the special condition?

In a special condition addition of HBr to unsymmetrical alkene takes place contrary to Markovnikov's rule . a) What is the special rule?

In a special condition addition of HBr to unsymmetrical alkene takes place contrary to Markovnikov's rule . Give the mechanism of anti Markonikov's addition of HBr to propene

Acid catalysed hydration of alkene gives alcohol. In this reaction addition of water takes place according to Markownikoff's rule. Since intermediate carbocation is formed in this reaction, rearrangement of carbocation takes place. In oxymercuration-demercuration reaction hydration of alkene takes place according to Markownikoff's rule. Oxymercuration demercuration is a better process than the catalytic hydration of alkene because in oxymercuration-demercuration, no rearrangement is possible. In hydroboration oxidation, hydration of alkene takes place as if it is according to anti-Markownikoff's addition. In hydroboration oxidation reaction rearrangement is not possible. Both in oxymercuration-demercuration and hydroboration oxidation intermediate carbocation are not formed. The product formed in the following reaction is

Identify the incorrect statement/statements: i) Alkynes are more reactive than alkenes towards electrophilic addition reaction ii) Alkynes are less reactive than alkenes towards electrophilic addition reaction iii) Alkynes decolourise Br_2 water iv) Addition of HBr to alkynes in presence of peroxide proceeds via Markownikoff's rule : i and ii, ii and iii, I and iv, ii and iv

In which conditions total internal reflection takes place ? Light obliquely travels from the optically rarer medium to thr optically denser medium. , Light obliquely travels from the optically denser medium to the optically rarer medium, Incident angle is equal to the critical angle. , Incident angle is greater than critical angle.