Technique

This is one of the 117 mis-spellings listed as 'Common difficulties' in the section on 'Spelling' within 'Writing' in UEfAP.

There is an '-h-' after the '-c-' in technique, as in such derivatives as technical, technician and so on.

Etymological note: the root of technique is the Greek τέχνη, of which the middle letter is chi, transliterated as '-ch-'.