MCQ Practice Science 📖 Who invented typewriter? ক Pascalখ Shockleyগ Sholesঘ Waterman 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 miner's safety-lamp? Next Who proposed the chemical evolution of life?
