`{:(HO-CH_(2)-CH_(2)-overset(O)overset(||)C-H),(" "(3)" "(2)" "(1)):}`
Which conformer of above compound id most stable (consider conformer across `(C_(2)-C_(3))`

HO-underset((3))(CH_2)-underset((2))(CH_2)-underset((1))overset(O)overset(||)(C)-H Which conformer of above compound is most stable (consider conformer across (C_2-C_3)

HO-underset((2))(CH_2)-underset((3))(CH_2)-F Which conformer of above compound is most stable across C_2-C_3 ?

CH_(3)CH_(2)CH_(2)-overset(O)overset(||)(C)-H+CH_(3)-C-=CH overset(Na,NH_(3)(l))to

CH_(3)-overset(O)overset(||)(C)-C_(2)H_(5) & CH_(3)-overset(O)overset(||)(C) - cannot be distinguished by

HOCH_(2)CH_(2)CH_(2)-overset(O)overset(||)(C)-OCH_(2)CH_(3) overset(PC C)(to) (A) underset((1 "molar equivalent"))overset(H_(2)C = CHMgBr)(to) (B) overset(NH_(4)Cl//H_(2)O)(to)(C)overset(KOH)underset(H_(2)O)(to)overset(H_(3)O^(o+))(to) underset("Pyridine")overset((CH_(3)-overset(O)overset(||)(C))_(2)O)(to)(D) Product (D) is :