Verbal Reasoning - Mental Ability Questions

Select the related word from the given alternatives.
Cotton : White :: Coal : ?

Prema is Ajay's sister. Benita is Ajay's mother. Benjamin is Benita's father. Leela is Benjamin's mother. How is Prema related to Leela

How many such pairs of letters are there in the word REGIONAL, each of which has as many letters between them in the word (in both forward and backward directions) as they have between them in the English alphabetical series ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

JN, OR, UW, BC, ?

In the following question, select the related letters from the given alternatives.
BPTW : CQUX : : CHNS : ?

What will come in place of the question mark (?) in the following number series?14, 18, 9, 25, 0, ?

In the following question, select the number which can be placed at the sign of question mark(?) from the given alternatives.

In the following question, select the related number from the given alternatives.
40 : 100 : : 56 : ?