Verbal Reasoning - Mental Ability Questions

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

ENG, GQI, ITK, KWM, ?

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

AK, DQ, GV, JZ, ?

In the following question, select the related letter pair from the given alternatives.PIR : OHQ : : ? : ?

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

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

Dadabhai Naoroji, Bal Gangadhar Tilak, Lala Lajpat Rai, ?

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

upset, aurora, spurn, strut, status, ?

In the following question, select the related word from the given alternatives.
Sheep : Lamb : : Cow : ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

56 ÷ 8 + 12 - 72 = ?