All about Names of the Chemical Elements 1. There are 115 chemical elements known today to the world. Only 90 are found in nature and the rest are artificially created. 2. A good number of elem
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Metals and Non-Metals MCQs Check in Periodic Table How many metals- non-metals and metalloids? 1. Which of the following is the best electrical conductor? (a) Gold (b) Silver (c)
Class 10 - Science Proficiency Test Paper 2012 (Set-A) (See Answer key at the end.) Answer Key:
