Verbal Reasoning - Mental Ability Questions

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

381 : 160 : :478 : ?

Select the related letters from the given alternatives.

IJK : RQP :: TUV : ?

Select the related letters from the given alternatives.

EGI : BDF :: KMO : ?

Select the missing word based on the given related pair of words.

Butter : Milk :: Book : ___

In the following question, select the related letter pair from the given alternatives.

MRQ : PUT : : ?  :  ?

Pointing to a man, a woman said "His mother is the daughter of my mother's  only daughter" . How is the man related to that woman?

If the last four letters of the word 'CONCENTRATION' are written in reverse order followed by next two in the reverse order and next three in the reverse order and then followed by the first four in the reverse order, counting from the end, which letter would be eighth in the new arrangement ?

Choose the missing terms out of the given alternatives Y, B, T, G, O, ?