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Occurrence of metals



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Q1. Which metal is extracted from Cinnabar?

(a) Zinc
(b) Copper
(c) Iron
(d) Mercury

Q2. Silver is extracted from which of the following ore?

(a) Calamine
(b) Cinnabar
(c) Argentite
(d) Malachite

Q3. The composition of bronze is generally 82 percent copper and 18 percent tin.

(a) True
(b) False
(c) -
(d) -

Q4. What is the concentration of zinc in calamine?

(a) 98 percent
(b) 94 percent
(c) 86 percent
(d) 74 percent

Q5. Malachite is an ore of copper with 58 percent copper concentration.

(a) True
(b) False
(c) -
(d) -

Q6. Which of the following is not a suitable ore for extracting iron?

(a) Hematite
(b) Magnetite
(c) Siderite
(d) Iron Pyrites

Q7. What is the composition of brass?

(a) 49 percent copper and 51 percent zinc
(b) 50 percent copper and 50 percent zinc
(c) 37 percent copper and 63 percent zinc
(d) 63 percent copper and 37 percent zinc

Q8. What is the composition of Kaolinite?

(a) Fe2O3
(b) Al2O3.2H2O
(c) [Al2(OH)4Si2O4]
(d) CuFeS2

Q9. Which of the following is the finest iron ore?

(a) Hematite
(b) Magnetite
(c) Siderite
(d) Iron Pyrites

Q10. Which of the following is the chief ore of aluminium?

(a) Kaolinite
(b) Bauxite
(c) Malachite
(d) Cinnabar


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