Q. Deuterium is an isotope of which element?
Answer: Hydrogen
Notes: Protium, deuterium and tritium are the three stable isotopes of hydrogen. Heavy water used in the nuclear reactors as moderator uses deuterium isotope of hydrogen.

This Question is Also Available in:

हिन्दी
Question Source: 📚This question has been sourced from GKToday's "40000+ GK / General Studies MCQs for SSC & State PCS Exams" App Exclusive Course in GKToday Android Application which provides more than 40K General Knowledge and General Studies questions with explanations asked in all Competitive Exams of India. Download the app here.
📌 Question Number: 52 in Chemistry-3-Elements in the above course in App.