Analogy Questions

In the following question, select the related word from the given alternatives.
Frog : Amphibian : : Lizard : ?

Select the related word/letters/numbers from the given alternatives:
3 : 243 :: 5 : ?

In the following question, select the related number from the given alternatives.
40 : 100 : : 56 : ?

Select the related word from the given alternatives.
Cotton : White :: Coal : ?

Select the related word/letters/number from the given alternatives.
Ctrl+X : Cut : : Ctrl+C : ?

In the following question, select the related word from the given alternatives.
Ampere : Electric current : : Fathom : ?

Select the related word/letters/number from the given alternatives.
36 : 25 : : 100 : ?

Find out the odd word/letters/number/number pair from the given alternatives.