`CICH_(2)-CH_(2)Clunderset(?)overset(Alc.KOH)to(A)underset(?)overset(NaCH_(2))to(B)`
find (A) and (B)

CH_(3)-CH=CH_(2)underset(773 K)overset(Br_(2))to[A]underset("Heat")overset(KOH(alc.))to[B]

CH_(3)-CH=CH_(2)underset(773 K)overset(Br_(2))to[A]underset("Heat")overset(KOH(alc.))to[B]

Identify the product 'D' in the following sequence of reactions : H_(3)C-CH_(2)-CH_(2)-Clunderset(KOH)overset(Alc)to'B'overset(HBr)to'C'underset("Ether")overset(Na)to'D'

CH_(3)-underset(Cl)underset(|)(C)H-underset(Cl)underset(|)(C)H-CH_(3)underset((ii)NaNH2)overset((i)Alc.KOH)(to)A (major) underset(Pd//CaCO_(3))overset(H_(2))(to)B

CH_(3)-underset(Cl)underset(|)(C)H-underset(Cl)underset(|)(C)H-CH_(3)underset((ii)NaNH2)overset((i)Alc.KOH)(to)A (major) underset(Pd//CaCO_(3))overset(H_(2))(to)B

CH_(3)CH_(2)COOHunderset(redP)overset(Cl_(2))toAoverset(alc KOH)to B,B is

In how many of the following reactions regioselectivity can be observed. (I). CH_(3)-overset(CH_(3))overset(|)(C)H-CH_(2)-Ohunderset(Delta)overset(con" "H_(2)SO_(4))to (II). CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(C)H_(2)underset(Delta)overset(Al_(2)O_(3))to (III). CH_(3)-overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-CH_(3)underset(Delta)overset(alc.KOH)to (IV). CH_(3)-CH_(2)-underset(Br)underset(|)(C)H-CH_(2)-CH_(3)underset(Delta)overset(Alc.KOH)to

CH_(3)-CH_(2)-CH_(2)-Cl underset("KOH")overset("alc.")(to)B overset("HBr")(to)C overset(Na)underset("ether")(to)D . In the above sequence of reaction, the product D is