MCQ Questions for Class 10 Science Chapter 3 Metals And Non-Metals
1. The non-metal which is liquid at room temperature is:a) Mercuryb) Brominec) Carbond) Helium Answer (b)BromineExplanation: Bromine is the only non-metal which exists as a liquid at room temperature. 2. The number of protons in an atom of an element A is 19 then, the number of electron in its ion A+ is:a) 18b) 19c) 20d) 21 Answer … Read more
