USA HISTORY

RECONSTRUCTION 1865 1877

TRANSCONTINENTAL RAILROAD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is ore?
A
Any type of rock
B
Rock that is not worth anything
C
Rock that is worth something
D
Rock found in rivers
Explanation: 

Detailed explanation-1: -Ore is a deposit in Earth’s crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses.

Detailed explanation-2: -Palladium is the most expensive of the four major precious metals – gold, silver and platinum being the others. It is rarer than platinum, and is used in larger quantities for catalytic converters.

Detailed explanation-3: -Ores are concentrations of minerals in rock that are high enough to be economically extracted for use. All ores are minerals, but all minerals are not necessarily ores. Rocks-A rock is made up of 2 or more minerals. You need minerals to make rocks, but you don’t need rocks to make minerals.

Detailed explanation-4: -Serendibite – $1.8 Million Per Carat Costing $1.8 million per carat, serendibite has more than earned its place as one of the most expensive minerals in the world.

Detailed explanation-5: -Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals.

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