Verbal Reasoning - Mental Ability Questions

In the following question, select the related word pair from the given alternatives.
Canada : Ottawa : : ? : ?

If A is the mother of B and K, D is the husband of A. E is the son of D's brother. What is the relation of A with E

In the following question, select the related letters from the given alternatives.
KLMN : IJKL : : TUVW : ?

In the following question, select the related letters from the given alternatives.
PRAG : QTDK : : STOP : ?

Choose the related word/letters/number from the given alternatives.
NPR : GHI : : TVX : ?

Find the missing number from the given alternatives.

The following question consist of two words that have a certain relationship to each other, followed by four alternatives. Select the best alternative that has the same relationship as the original pair of words

Carnivore: Herbivore

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

A_C_E_B_DE