Question

`Roversetunderset(||)(O)(C)CH_3` (ketone) can be reduced to `RCH_2CH_3` (alkane ) be
I. `LiAlH_4`
II. P/HI
III. Zn(Hg)/conc. HCl
IV. `N_2H_4//C_2H_5 overset(-+)(ON)a`
Select the correct reagents
A. I, II and III
B. I, III and IV
C. I, II and IV
D. II, III and IV

Answer 1

Correct Answer - D
I. `R-oversetunderset(||)(O)(C ) -CH_3 overset(LiAlH_4)(to) Rundersetoverset(|)(OH)(C )HCH_3`
II. `overset(P//HI)(to)RCH_2CH_3`
III. `overset(Zn(Hg)//conc.HCl)(to) RCH_2CH_3` (Clemmensen)
IV. `overset(N_2H_4//C_2H_5overset(-+)(ON)a)(to)RCH_2CH_3` (Wolff-kishner)
Thus , II, III and IV.