Q : the seventeenth letter of the English alphabet, has but one sound (that of k), and is always followed by u, the two letters together being sounded like kw, except in some words in which the u is silent. See Guide to Pronunciation, / 249. Q is not found in Anglo-Saxon, cw being used instead of qu; as in cwic, quick; cwen, queen. The name (k/) is from the French ku, which is from the Latin name of the same letter; its form is from the Latin, which derived it, through a Greek alphabet, from the Ph/nician, the ultimate origin being Egyptian.

Example:
Q. What are the names of 2 other complex carbohydrates that are found in the diet apart from starch?

Taxonomy
lowercase, kw, descender, English, Qoppa, free encyclopedia, Search, Qq, swash, Greek, History, Semitic languages, languages, capital, Articles with unsourced statements, digraph, spelt, voiceless velar plosive.

Defination from the web:
Q were all used to represent the sounds /k/ and /g/ (which were not differentiated in writing). Of these, Q was used to represent /k/ or /g/ before a rounded vowel (e.g. "EQO" = ego), K before /a/, and C elsewhere. ...