Verbal Reasoning - Mental Ability Questions

Select the related word/letters/number from the given alternatives.

EFG : OPQ : : ? : STU

Select the related word/letters/numbers from the given alternatives:

Air:Bird::Water:

Select the related word/letters/number from the given alternatives.

Rajiv Gandhi Airport : Hyderabad : : Indira Gandhi Airport : ?

Select the related number from the given alternatives.

95 : 105 :: 89 : ?

Select the related number from the given alternatives.

111 : 89 :: 105 : ?

Convent : Cloister :: Eyrie : ?

Select the related word/letters/numbers from the given alternatives:

381 : 160 : :478 : ?

In a family, there are six members A, B, C, D, E and F. 

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is F related to C ?