Question one: Crikey: evens or odd? (6)
I believe the answer is:
quirky
'odd?' is the definition.
(thesaurus)
'question one crikey evens' is the wordplay.
'question' becomes 'qu' (abbreviation).
'one' becomes 'i' (Roman numeral).
'evens' means one should take alternating letters (I've seen 'even' mean this (letters in even-numbered positions are used)).
The alternate letters of 'crikey' are 'rky'.
'qu'+'i'+'rky'='QUIRKY'
'or' is the link.
(Other definitions for quirky that I've seen before include "'Kinky, off-beat (6)'" , "Idiosyncratic" , "Peculiar in behaviour" .)