Chapter 3

There are over three thousand different minerals. Minerals classified mainly as metallic, non-metallic, ferrous and non-ferrous.

• True

• False

Answer explanation

minerals are classified mainly as metallic and non-metallic minerals.

for ferrous and non-ferrous is part of metallic.

Which one is not a non-ferrous metallic minerals?

• Zinc

• Aluminum

• Iron ore

• Copper

Answer explanation

Iron ore is not a non-ferrous metallic mineral; it is a ferrous mineral because it contains iron. In contrast, zinc, aluminum, and copper are all classified as non-ferrous metals.

What is extraction of minerals?

• The process of removing valuable minerals from the earth.

• The process of planting minerals in the earth.

• A method of recycling old minerals for reuse.

• The study of mineral properties and their uses.

Answer explanation

Extraction of minerals refers to the process of removing valuable minerals from the earth, making the first answer choice correct. The other options do not accurately describe this process.

Which one is not a extraction of minerals?

• Quarrying

• Construction

• Drilling

• Mining

Answer explanation

Construction is not an extraction of minerals; it involves building structures. In contrast, quarrying, drilling, and mining are all methods used to extract minerals from the earth.

What are the differences between open cast mining and shaft mining?

• Open cast mining is surface mining, while shaft mining is underground mining.

• Open cast mining is only for coal, while shaft mining is for metals.

• Shaft mining is a type of surface mining, while open cast mining is underground.

• Open cast mining requires more water than shaft mining.

The process of taking out minerals from rocks buried under the earth's surface is called mining. What is the name of the process shown in the picture beside?

• deep mining

• Open cast mining

• quarrying

• Shaft mining

What is power resources?

• Power resources refer to physical power like strength.
• Power resources are sources of energy used for generating power.

• Power resources are exclusively electrical appliances.
• Power resources are only fossil fuels.

Which one is not a conventional sources of energy?

• Natural gas

• Coal

• Solar energy

• Oil

Answer explanation

Solar energy is not a conventional source of energy; it is classified as a non-conventional source of energy. In contrast, natural gas, coal, and oil are all conventional fossil fuels.

Which one is a conventional of energy?

• Bio Gas

• Hydel Power

• Geothermal energy
• Solar energy

What are the differences between conventional energy and non-conventional energy?

• Conventional energy is always renewable and non-polluting while non-conventional energy is polluting

• Non-conventional energy sources are more expensive and less efficient then conventional energy.

• Conventional energy is derived from solar and wind sources.
• Conventional energy is finite and polluting, while non-conventional energy is renewable and cleaner.