Chemistry General Knowledge [GK] Questions and answers for preparing all Competitive Examinations. ELEMENTS 1. Most abundant element in the Universe? Answer: Hydrogen 2. Number of discovered elements? Answer: 120 3. Names are given to ......... elements? Answer: 112 4. 112th element in periodic table? Answer: Coppernicium 5. 43rd element in periodic table? Answer: Technetium 6. First artificial element? Answer: Technetium 7. Lightest gas at S.T.P? Answer: Hydrogen 8. Simplest element gas? Answer: Hydrogen 9. Element Common to all acids? Answer: Hydrogen 10. Most abundant element in the human body? Answer: Oxygen 11. Most common element by weight in Earth’s crust? Answer: Oxygen 12. Most ductile element? Answer: Gold 13. Most conductive metal? Answer: Silver 14. Most abundant metallic element in the human body? Answer: Calcium 15. Most abundant element in the earth’s atmosphere? Answer: Nitrogen 16. Most abundant metallic element in the earth’s crust? Answer: Aluminium 17. The metal most used for house hold purpose? Answer: Aluminium 18. The metal contained in clay? Answer: Aluminium 19. The heaviest gaseous element? Answer: Radon 20. Rarest element in the earth’s atmosphere? Answer: Radon 21. Heaviest noble gas? Answer: Radon 22. Element stored in Kerosene to prevent oxidation? Answer: Sodium 23. The lightest metal element? Answer: Lithium 24. Least dense metal? Answer: Lithium 25. Least stable radioactive Isotope? Answer: Lithium-5 26. The rarest naturally occurring element in the earth’s crust? Answer: Astatine 27. Element with highest melting and boiling points? Answer: Tungsten 28. Element used to make electric bulb filament? Answer: Tungsten 29. Which is known as ‘wolfram’? Answer: Tungsten 30. Highest thermal expansion? Answer: Caesium
Posted on: Mon, 01 Sep 2014 04:41:18 +0000
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