1. Which mineral is a sulfide ore of zinc?
A.
Zinc blende
B.
Calamine
C.
Bauxite
D.
Haematite
Correct Answer:
Zinc blende
Explanation:
Zinc blende is zinc sulfide, ZnS, and is an important sulfide ore containing sulfur.
2. Galena is the sulfide ore of which metal?
A.
Copper
B.
Lead
C.
Mercury
D.
Iron
Correct Answer:
Lead
Explanation:
Galena is lead sulfide, PbS, so it is a sulfide ore of lead containing sulfur.
3. What is the chemical formula of copper glance, a sulfide ore?
A.
CuS
B.
Cu2S
C.
Cu2O
D.
CuCO3
Correct Answer:
Cu2S
Explanation:
Copper glance is copper(I) sulfide, Cu2S, which is a sulfur-containing sulfide ore of copper.
4. Which of the following is the sulfide ore of mercury?
A.
Cinnabar
B.
Galena
C.
Zinc blende
D.
Copper pyrites
Correct Answer:
Cinnabar
Explanation:
Cinnabar is mercury(II) sulfide, HgS, and is the principal sulfide ore of mercury.
5. Iron pyrites is represented by which formula?
A.
FeS
B.
FeS2
C.
Fe2O3
D.
FeCO3
Correct Answer:
FeS2
Explanation:
Iron pyrites is iron disulfide, FeS2, an important sulfide mineral containing sulfur.
6. Which one of the following is a sulfide ore of copper?
A.
Copper glance
B.
Malachite
C.
Cuprite
D.
Chalcopyrite-free limestone
Correct Answer:
Copper glance
Explanation:
Copper glance is Cu2S, so it is a sulfide ore of copper.
7. The mineral ZnS is commonly known as which ore?
A.
Galena
B.
Cinnabar
C.
Zinc blende
D.
Iron pyrites
Correct Answer:
Zinc blende
Explanation:
Zinc blende is the common name for zinc sulfide, ZnS, a sulfur-containing ore.
8. Which compound is present in galena?
A.
PbS
B.
PbO
C.
PbCO3
D.
PbSO4
Correct Answer:
PbS
Explanation:
Galena consists mainly of lead sulfide, PbS, making it a sulfide ore.
9. Cinnabar contains sulfur combined with which metal?
A.
Zinc
B.
Lead
C.
Mercury
D.
Copper
Correct Answer:
Mercury
Explanation:
Cinnabar is HgS, so sulfur is combined with mercury in this sulfide ore.
10. Which pair correctly matches a sulfide ore with its formula?
A.
Galena — PbS
B.
Cinnabar — ZnS
C.
Zinc blende — HgS
D.
Copper glance — FeS2
Correct Answer:
Galena — PbS
Explanation:
Galena is correctly matched with PbS, lead sulfide, which is a sulfide ore containing sulfur.
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