11. What mineral is the main component of sand?
A) Quartz
B) Feldspar
C) Calcite
D) Olivine
Answer: A) Quartz
12. What mineral is used to make batteries?
A) Quartz
B) Feldspar
C) Lithium
D) Olivine
Answer: C) Lithium
13. Which mineral is used as a source of lithium for batteries?
a) Quartz
b) Lithium carbonate
c) Halite
d) Calcite
Answer: b) Lithium carbonate
14. Which mineral is used in the production of glass?
a) Quartz
b) Halite
c) Gypsum
d) Feldspar
Answer: a) Quartz
15. Which mineral is commonly used in the production of fertilizers?
a) Apatite
b) Gypsum
c) Pyrite
d) Barite
Answer: a) Apatite