Question

If the following reactions,
(a) `CH_(3)-overset(CH_(3))overset(|)(CH)-underset(OH)underset(|)(CH)-CH_(3)overset(H^(+)//"Heat")rarr underset((("Major"),("product")))(A)+underset((("Major"),("product")))(B)`
(b) `A underset("in absence of peroxide")overset("HBr, dark")rarr underset((("Major"),("product")))(C)+underset((("Major"),("product")))(D)`
the major products (A) and (C) are respecticvely:
A. `CH_(3)-overset(CH_(3))overset(|)(C)-CH-CH_(3)` and `CH_(3)-overset(CH_(3))overset(|)(CH)-underset(Br)underset(|)(CH)-CH_(3)`
B. `CH_(2)=overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)` and `CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)`
C. `CH_(2)=overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)` and `underset(Br)underset(|)(CH_(2))-overset(CH_(3))overset(|)(CH)-CH_(2)-CH_(3)`
D. `CH_(3)-overset(CH_(3))overset(|)(C)=CH-CH_(3)` and `CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)`

Answer 1

Correct Answer - D
`CH_(3)-overset(CH_(3))overset(|)(CH)-underset(OH)underset(|)(CH)-CH_(3)overset(H^(+)//Delta)rarr CH_(3)-overset(CH_(3))overset(|)(CH)-overset(+)(CH)-CH_(3) overset("1,2-Hydride shift")rarr CH_(3)-underset(+)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)overset(-H^(+))rarr underset("Major (A)")(CH_(3)-overset(CH_(3))overset(|)(C)=CH-CH_(3))+underset("Minor (B)")(CH_(2)=overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3))underset((A))(CH_(3)-overset(CH_(3))overset(|)(C)=CH-CH_(3))underset("Dark in the absence of peroxide")overset(HBr)rarr CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)`