Verbal Reasoning - Mental Ability Questions

In the following question, select the related word pair from the given alternatives. Pascal : Pressure : : ? : ?

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

13 - 14 + 15 x 70 ÷ 14 = ?

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

BMY, DNW, FOU, ?

In the following question, select the related number from the given alternatives.
48 : 63 : : 80 : ?

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

B, F, K, Q, ?

Select the related word/letters/number from the given alternatives. MOLTU : ? :: HOPE : IPQF

Mathur's uncle's daughter's brother is Salmi. How is Sonm related to Mather?