Verbal Reasoning - Mental Ability Questions

Ram said , "Sita is my paternal great grandfather's only son's only daughter-in-law". How is Sita related to Ram?

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

CAT , DBT , ECT , ?

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

2, 3, 7, 16, ?

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

SAY, TDD, UGI, VJN, ?

Select the option that is related to the third word on the same basis as the second word is related to the first word.

Real : Genuine :: Fake : ?

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

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