Verbal Reasoning - Mental Ability Questions

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?

In a certain code language, “LUNGS” is written as “OWQIV”. How is “HEART” written in that code language?

Select the related word/letters/number from the given alternatives.
30 : 16 :: 24 : ?

If the second half of the given series is reversed, then what will be the fifth term to the left of the ninth term from the right?

9$YX8N6OLBUJZT@1QFD%

If in a certain code language, "STUBBORN" is written as "TUVCANQM". How is"TRAINING" written in that code language?

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, ?

Choose the related word/letters/number from the given alternatives.
AF : BE : : ? : DH

If 12 (20) 16 and 21 (35) 28, then what is value of A in 48 (80) A ?