Verbal Reasoning - Mental Ability Questions

BACTERIA : ILLNESS :: ____ : ____

If FRIEND is coded as HTKGPF then REVEAL will be coded as:

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
ZYX, VUT, QPO, MLK, HGF, ?

A girl is standing facing towards the east. She turns 45 degree in the anticlockwise direction and then turns 180 degree in the clockwise direction. Which direction is she facing now?

If 4 x 5 x 2 = 524, 3 x 7 x 2 = 723 and 6 x 8 x 7 = 876 then 9 x 4 x 5 = ?

In a row of 15 children, when Raju was shifted three places towards right, he became 8th from the right end. What was his earlier position from the left end of the row?

If BLACKSMITH is coded as CNBELUNKUJ, then CHILDREN will be coded as ?

In the following question, select the related number from the given alternatives.
7 : 48 : : 11 : ?