MCQ Practice Science 📖 Who invented the miner's safety-lamp? ক Alexander Graham Bellখ Sir Frank Whittleগ Sir Thomas Maloryঘ Thomas Savery Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up Previous Who invented the doctor's thermometer? Next Who invented typewriter?
