Minerals

A mineral is a hard material made up of one or more rocks.

• True

• False

Answer explanation

What is an ore?

• A type of non-metallic mineral.

• A type of rock.

• A natural combination of minerals from which metals can be extracted.

• A type of non-metallic mineral.

What is the difference between ferrous and non-ferrous metallic minerals?

• Ferrous minerals contain copper, while non-ferrous minerals do not.

• Ferrous minerals are inorganic, while non-ferrous minerals are organic.

• Ferrous minerals are organic, while non-ferrous minerals are inorganic.

• Ferrous minerals contain iron, while non-ferrous minerals do not.

What are non-metallic minerals?

• Minerals that do not contain metal.

• Minerals that contain both metal and non-metal.

• Minerals that are obtained from living things.

• Minerals that are composed of matter other than plant or animal.

What is the process of extracting useful minerals from the surface of the earth called?

• Drilling

• Mining

• Quarrying

• Shaft mining

What is open-cast mining?

• A method of mining where deep tunnels are made to reach the mineral at great depths.

• A method of mining where minerals are taken out by removing the surface layer of the rock.

• A method of mining where natural gas and petroleum are extracted from deep wells.

• A method of mining where minerals are extracted from under the sea.

Identify the type of mining

• Off- shore drilling

• On- shore drilling

• Shaft mining

• Quarrying

Which of the following is used for making machinery and its parts

• Iron ore

• Silver

• Coal

• Gypsum

Which of the following is used for making ornaments

• Coal

• Gold

• Copper

• Salt

Ananya, Krish and Kavya were discussing about conservation of minerals in their geography class. They came up with some examples. Which of the following are examples of conservation of minerals they discussed?

• In the past, people used to cook and eat in brass utensils. Today, these utensils have been replaced by stainless steel utensils.

  
  

• They noticed that petrol and diesel run vehicles in their city have been replaced by CNG run vehicles or even e- vehicles.

  
  

• At home, they saw that LED lamps have been substituted in place of CFL.

  
  

• They learned that aluminum wires have been largely replaced by copper wires in electrical circuits.

  
  

• All of the above