Chemistry Structure of Atom Test 1 Welcome to your Chemistry Structure of Atom Test 1 Name Email 1.According to Dalton’s atomic theory, atoms combine in the ratio of small whole numbers to form ______. (a) neutrons (b) molecules (c) protons (d) compounds None 2.How many oxygen atoms are there in a molecule of ozone? (a) One (b) Four (c) Two (d) Three None 3. Which of the following states of matter is also known as the Bose-Einstein condensate? (a) Second (b) Third (c) Fourth (d) Fifth None 4.Who among the following is considered as the ‘Father of Modern Atomic Theory’? (a) Robert Boyle (b) John Dalton (c) Willard Gibbs (d) Otto Hahn None 5.How many oxygen atoms are present in a molecule of potassium permanganate? (a) One (b) Four (c) Three (d) Two None 6. In reference to atomicity, argon is: (a) diatomic (b) polyatomic (c) triatomic (d) monoatomic None 7. Atoms of which element combines with hydrogen to give water? (a) Nitrogen (b) Iodine (c) Carbon (d) Oxygen None 8.Which one of the following element is a Monatomic unit? (a) Phosphorus (b) Gold (c) Sulphur (d) Hydrogen None 9. Cathode rays are a beam of: (a) positrons (b) neutrons (c) protons (d) electrons None 10. If the size of the nucleus of an atom is compared with a cricket ball, then the radius of the atom is approximately equal to how many kilometres? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005 None 11.Who among the following is credited with the discovery of neutrons? (a) J Chadwick (b) James P Joule (c) E Rutherford (d) JJ Thomson None 12.The first electron shell which is the nearest to the nucleus never holds more than 'n' electrons, where 'n' is equal to: (a) 2 (b) 8 (c) 4 (d) 6 None 13.Electron was discovered in the year 1897 by __________. (a) T. A. Edison (b) Nikola Tesla (c) J J Thomson (d) Isaac Newton None 14. J J Thomson received the Nobel Prize in Physics for the discovery of _______. (a) protons (b) electrons (c) neutrons (d) positrons None Time's up
