Drug Induced Lupus is caused by all except: (A) Sulphonamides, (B) Hydralazine, (C) Isoniazid, (D) Procaine
Answer is D. Drugs metablized by acetylation can cause drug induced lupus: "D.SHIP"

Dapsone
Sulphonamides
Isoniazid
Procainamide (not Procaine).