Verbal Reasoning - Mental Ability Questions

In the following question, select the related letter/letters from the given alternatives.

PGY : JAS : : VIK : ?

Select the related word/letters/number from the given alternatives.

TR : VX : : MK : ?

Select the related word/letters/numbers from the given alternatives:

Star : Telescope :: Ship : ?

Select the related word/letters/number from the given alternatives.

School: Study :: Laboratory: ?

What should come in place of the question mark(?) in the following questions ?

316 + 412 - 223 - 11112 = ?

Select the related word/letters/number from the given alternatives.

ZY : CD : : SR : ?

Select the related word/letters/number from the given alternatives.

18 : 30 : : 36 : ?

Select the related word/letters/numbers from the given alternatives:

8: 32 : : ? : 108