Verbal Reasoning - Mental Ability Questions

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

Nest : Bird : : ? : ?

From the given words, select the word which cannot be formed using the letters of the given word.
MOTLIEST

In a certain code language, "TEACHER" is written as "6427341" and "MAN" is written as "825". How is "MERCHANT" written in that code language ?

If A denotes '+', B denotes '­', C denotes 'x' and D denotes '÷', then which of the following statement is true?

In a certain code GIVE is written as VIEG and OVER is written as EVRO. How will DISK be written in that code?

If STUDENT is coded as 103, what is the code for SCHOOL?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
ACE, FHJ, KMO, ?