This is a tough one! From the Oxford Dictionaries Blog:
"The Oxford English Dictionary, as a historical dictionary, aims to give the earliest example of a word in English, and then show its subsequent development through illustrative quotations and uses many quotations from Dickens in doing so. In fact to date there are 9,218 Dickens quotations in the OED, making him the 13th most quoted source (just marginally ahead of William Caxton). Take our interactive quiz to see if you can tell which words have their first quotation from a work by Charles Dickens, and which make you cry What the dickens?"
I got 7 out of 9 right, but mostly through sheer guesswork!