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Displaying 5 out
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questions & answers.
mineral: naturally occurring substance found in the Earth's crust
smelting: extracting metal from ore by heating
fossil fuel: fuels like coal and petrol that were formed from dead organic substances
ore: a rock which contains enough mineral to make its mining profitable
biofuel: fuel obtained from organic matter like cow dung or vegetable oil
nuclear fission: a process in which a large atom splits into smaller atoms with release of energy
Q1.
What are the differences between high Grade Ore and low grade Ore?
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High grade ores:
- The mineral content is high.
- Impurities are less.
Low grade ores:
- The mineral content is less.
- The impurities are high.
Q2.
Distinguish between wind energy and geo thermal energy.
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answer not shownQ3.
Distinguish between drilling and quarrying.
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answer not shownQ4.
What is the name of the mineral which is commonly used in food?
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'Common salt' or Sodium Chloride (NaCl) is commonly used in food.
Q5.
What are the names of three minerals which are founded in Europe?
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Following three minerals are found in abundance in Europe:
- Iron-ore
- Copper
- Coal
