Verbal Reasoning - Mental Ability Questions

Select the related word/letters/number from the given alternatives.
Opposite : Identical : : Lengthy : ?

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

8 - 14 + 7 x 10 ÷ 9 = ?

A series is given,with one term missing. Choose amongst the given responses choose the meaningful one

206, 221, 251, 296, ?, 431

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

-0.5, -0.35, -0.2, -0.05, ? , 0.25

A boy is traveling towards the west. He turns to the right and then again turns to the left. In which direction is the boy facing now?

Vineet travels 16 km towards west, turns right and travels another 12 km, and then takes two successive left turns covering 8 km and 12 km in each turn respectively. Finally, he takes a right turn and travels 10km further. How far is he now from his original position ?

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

Three words in bold letters are given in each question, which have something in common among themselves. Out of the four given alternatives, choose the most appropriate description about these three words.

Vesuvius: Etna: Kilimanjaro