Analogy Questions

If Ammonia : Gas then Camphor : ?

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

12 : 60 : : 28 : ?

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

ACEG : ZXVT :: IKMO : ?

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

BDGK : ACFJ : : ? : DFIM

Select the related word from the given alternatives.

Screw : Screw driver :: Nail : ?

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

21 : 3 :: 574 : ?

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

VERMIN :? :: ORDERS : ERSORD

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

QSUW : TVXZ :: ACEG :?