Weight in questions about extremely logical Victorian physicist (7)
I believe the answer is:
maxwell
'victorian physicist' is the definition.
(scientist James Clerk Maxwell)
'weight in questions about extremely logical' is the wordplay.
'weight' becomes 'w'.
'in' indicates putting letters inside.
'questions' becomes 'exam' (a set of questions).
'about' is a reversal indicator.
'extremely' suggests removing the centre.
'logical' with its middle taken out is 'll'.
'w' put inside 'exam' is 'ewxam'.
'ewxam' written backwards gives 'maxwe'.
'maxwe'+'ll'='MAXWELL'
(Other definitions for maxwell that I've seen before include "James Clerk --, Scottish physicist" , "Scottish scientist" , "Pioneer of electromagnetism - Czech-born tycoon" , "Victorian scientist" , "Robert, once a press baron" .)