Verbal Reasoning - Mental Ability Questions

If 'S' is related to 'Red', 'N' is related to 'Purple'. In the same way 'J' is related to which of the following?

Malini said, "Rohit is my maternal aunt's mother's only son's son". How is Malini related to Rohit?

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

API, CRK, ETM, ?, IXQ

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

AT, CR, FO, JK, ?

Select the missing number in the given box?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?

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

HTC, LXG, PBK, TFO, ?

Ganga leaves from her college at 10:00 a.m. She starts walking towards north and covers a distance of 14 km. She turns right and walks 20 km to reach point K. She turns left and walk 16 km. She again turns left and walks 10 km. How far (in km) and in which direction is she now from point K?