Analogy Questions

Square is related to Line in the same way as Cube is related to

In the following question, select the related letter pair from the given alternatives.PIR : OHQ : : ? : ?

In the following question, select the related letters from the given alternatives.
JPC : GMZ : : PUV : ?

In the following question, select the related letters from the given alternatives.
BPTW : CQUX : : CHNS : ?

Select the related word/letters/numbers from the given alternatives: DBCE : QOPR :: JLKI : ?

In the following question, select the odd word from the given alternatives.

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

In the following question, select the related number from the given alternatives.
48 : 63 : : 80 : ?