Q. What is the chemical formula of Hydrogen Cyanide?
Answer: HCN
Notes: HCN is the chemical formula of Hydrogen Cyanide. It is also called as Prussic acid. It is a colorless, extremely poisonous and flammable liquid.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 27 in Chemistry-14-Organic Chemistry Basics in above course in App.