Verbal Reasoning - Mental Ability Questions

First is prepared from the second. Here Wine is prepared from grapes andsimilarly, vodka is prepared from flour.

Hence, Wine : Grapes :: Vodka : Flour.

The given sequence is a combination of two series:
i.)Y,T, O and ii.)B, G, ?
i. consists of 2nd, 7th, 12th letters from end of English alphabet,while
ii. consists of 2nd, 7th, 12th letters from beginning of English alphabet
So, the missing letter in ii.) is the 12th letter from the beginning of English alphabet,which is L.

The specified letters are R, C, H, A and I. The only meaningful word  that can be made is CHAIR. The third letter of this word is A.

FRIEND : FPIBNZ

Follows a pattern that,

F - F

R- second letter to left of R i.e, P

I - I

E - Third letter to left of E i.e, B

N - N

D - Fourth letter to left of D i.e, Z

Similarly, for PATRON 

P - P

A -  second letter to left of A i.e, Y

T - T

R - Third letter to left of R i.e, O

O - O

N - Fourth letter to left of N i.e, J

PATRON : PYTOOJ

Therefore, FRIEND : FPIBNZ :: PATRON : PYTOOJ

First is used to prepare the second.

Hence, Wax : Grease :: Milk : Curd.