Unit 3: Group IIIA and Group IVA Elements

51. The Group IIIA element used in solar cells is:

a) Boron
b) Gallium
c) Aluminum
d) Indium
Answer: b) Gallium

52. The property of carbon that makes it versatile in forming compounds is:

a) Its high electronegativity
b) Its ability to form strong covalent bonds
c) Its high atomic mass
d) Its low density
Answer: b) Its ability to form strong covalent bonds

53. The Group IVA element that is used in the production of glass and ceramics is:

a) Carbon
b) Silicon
c) Tin
d) Lead
Answer: b) Silicon

54. The Group IIIA element that is used as a semiconductor in electronics is:

a) Boron
b) Gallium
c) Aluminum
d) Indium
Answer: d) Indium

55. The primary use of lead in industry is:

a) In batteries
b) In alloys
c) In pipes
d) In paints
Answer: a) In batteries

56. The Group IVA element that is known for its high melting point and hardness is:

a) Carbon
b) Silicon
c) Tin
d) Lead
Answer: a) Carbon

57. The Group IIIA element that forms an amphoteric oxide is:

a) Boron
b) Aluminum
c) Gallium
d) Indium
Answer: b) Aluminum

58. The common oxidation state of silicon in its compounds is:

a) +2
b) +4
c) +6
d) 0
Answer: b) +4

59. The element used in the manufacture of high-strength glass and ceramics is:

a) Boron
b) Silicon
c) Tin
d) Lead
Answer: b) Silicon

60. The Group IVA element that forms a strong acid when reacting with chlorine is:

a) Carbon
b) Silicon
c) Tin
d) Lead
Answer: c) Tin