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1 | |
There is a new gold discovery in __. |
| | A) | Lincoln, Montana |
| | B) | Gering, Nebraska |
| | C) | Boise, Idaho |
| | D) | Sacramento, California |
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2 | |
The difference between a resource and a reserve is that __. |
| | A) | a resource can contain very low concentrations of a substance, whereas a reserve contains the substance in a concentration that is economically feasible to mine |
| | B) | a reserve can contain very low concentrations of a substance, whereas a resource contains a substance in a concentration that is economically feasible to mine |
| | C) | a reserve is a confined area containing already mined substances, whereas a resource is an area where the substance lies yet to be mined |
| | D) | a resource is anything in the Earth that is beneficial to mankind, whereas a reserve is a place which has been designated as unlawful to mine resources |
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3 | |
International agreement says that the wealth from resources mined from regions of the ocean floor which are not in a territory or country are to be __. |
| | A) | left alone |
| | B) | awarded to the country which provided the technology to mine them |
| | C) | given to the United Nations for distribution |
| | D) | shared |
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4 | |
About __ of the elements on the periodic table are metals. |
| | A) | half |
| | B) | two thirds |
| | C) | three fourths |
| | D) | one third |
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5 | |
Fe2O3 is called iron III oxide or ferric oxide. It is also known as __. |
| | A) | calcite |
| | B) | chalcopyrite |
| | C) | magnetite |
| | D) | hematite |
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6 | |
__ was one of the first metals to be won from the Earth. |
| | A) | Gold |
| | B) | Silver |
| | C) | Aluminum |
| | D) | Copper |
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7 | |
Panning for gold by washing it repeatedly to separate out the gold is successful because of the __ of gold. |
| | A) | unreactivity |
| | B) | density |
| | C) | color |
| | D) | shape |
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8 | |
A quarry rock contains 0.0060% gold. How much of the rock contains 2.0 ounces of gold? |
| | A) | 3.7 x 10 3kg |
| | B) | 1.2 x 10 4kg |
| | C) | 945.0kg |
| | D) | 3.0 x 103kg |
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9 | |
If 0.00025 moles of gold are obtained from 65 grams of quarry rock, what percentage of the rock is gold? |
| | A) | 0.049% |
| | B) | 4.9% |
| | C) | 0.075% |
| | D) | 7.5 x 10-4% |
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10 | |
A superconductor, in contrast with ordinary conductors, has __ resistance. |
| | A) | more |
| | B) | no |
| | C) | the same |
| | D) | a variable |
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11 | |
Once acquired, __ became the metal of technology for nearly 30 centuries. |
| | A) | copper |
| | B) | bronze |
| | C) | iron |
| | D) | brass |
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12 | |
A characteristic of metals is that they |
| | A) | are malleable. |
| | B) | are brittle. |
| | C) | shatter. |
| | D) | are dull. |
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13 | |
Organic compounds in living plants contain more __ and less __ than the organic compounds of petroleum. |
| | A) | hydrogen, oxygen |
| | B) | oxygen, hydrogen |
| | C) | carbon, hydrogen |
| | D) | hydrogen, carbon |
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14 | |
Iron is more difficult to work with than copper and bronze because it has a higher__. |
| | A) | heat capacity |
| | B) | specific heat |
| | C) | density |
| | D) | melting point |
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15 | |
Steel is an alloy of iron containing small amounts of __. |
| | A) | silicon |
| | B) | calcium |
| | C) | carbon |
| | D) | oxygen |
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16 | |
Aluminum is very __, so it is difficult to obtain pure aluminum from its ores. |
| | A) | lightweight |
| | B) | strong |
| | C) | inert |
| | D) | reactive |
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17 | |
The valence electrons in metals are shared __ in the lattice. |
| | A) | among all the atoms of one layer |
| | B) | among the adjacent atoms |
| | C) | between two adjacent atoms |
| | D) | among all the atoms |
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18 | |
Hydrocarbons are compounds containing __. |
| | A) | hydrogen and carbon |
| | B) | hydrogen, carbon and oxygen |
| | C) | hydrogen, carbon and sulfur |
| | D) | hydrogen, carbon, oxygen and nitrogen |
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19 | |
__ is an inorganic substance composed mostly of calcium, aluminum, silicon and oxygen. |
| | A) | Soil |
| | B) | Crust |
| | C) | Humus |
| | D) | Clay |
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20 | |
What is the oxidation number of carbon in methyl alcohol, CH3OH? |
| | A) | +4 |
| | B) | –4 |
| | C) | 0 |
| | D) | +2 |
| | E) | –2 |
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