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Chemistry Quiz

Q31. Which one is the naturally occuring heaviest element
(a) Mercury
(b) Thorium
(c) Uranium
(d) Protactinium

Q32. What is the mass percentage of carbon in carbon dioxide (CO2)
(a) 15.8 %
(b) 20.1 %
(c) 27.3 %
(d) 32.3 %

Q33. What is the mass percentage of oxygen in carbon dioxide (CO2)
(a) 30.5%
(b) 50.9 %
(c) 65.8 %
(d) 72.7 %

Q34. What is the mass percentage of oxygen in carbon dioxide (CO2)
(a) 30.5%
(b) 50.9 %
(c) 65.8 %
(d) 72.7 %



Q35. Normal rainwater has a pH level of
(a) 3.2
(b) 5.6
(c) 6.3
(d) 8.3

Q36. Normal rainwater is slightly acidic due to the presence of
(a) Carbon dioxide
(b) Sulphur dioxide
(c) Methane
(d) None of the above

Q37. Which one is the most dense liquid from the below
(a) Water
(b) Choloform
(c) Gasolin
(d) None of the above

Q38. Nylon is a type of
(a) Polyamide
(b) Polyolefin
(c) Polyester
(d) Acrylic

Q39. Which one  element has the lowest electronegativity value
(a) Fluorine
(b) Chlorine
(c) Francium
(d) Radium

Q40. Which one  element has the highest electronegativity value
(a) Lithium
(b) Nitrogen
(c) Chlorine
(d) Fluorine



Q41. Plastic is a type of
(a) Polyester
(b) Polymer
(c) Acrylic
(d) None of the above

Q42. What is the atomic number of mercury
(a) 32
(b) 41
(c) 63
(d) 80

Q43. What is the chemical symbol of mercury
(a) Mr
(b) Mg
(c) Hg
(d) None of the above

Q44. Except mercury which is the other metal that is liquid at standard conditions for temperature and pressure
(a) Lead
(b) Bromine
(c) Barium
(d) Magnesium

Q45. Number of hydrogen atoms in a Glucose molecule
(a) 6
(b) 8
(c) 12
(d) 14


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