A naturally occurring substance that has a definite chemical composition is a

• ore

• rock

• mineral

• copper

The process of taking out minerals from rocks buried under the surface of the earth is named as

• mining

• pumping

• extracting

• none of these

Rock from which mineral are mined are known as

• metallic mineral

• limestone

• mineral

• ore

Give an example of shafts.

• Surface mining

• Deep bores

• Off-shore drilling

• None of these

Deep wells bored to take the petroleum and natural gas out is called

• quarrying

• drilling

• mining

• shaft mining

What is the process in which minerals lying near the surface are dug?

• Drilling

• Off-shore drilling

• Quarrying

• Extraction

Which among the following is the leading producer of iron-ore in the world?

• Europe

• Asia

• Antarctica

• North America

Which is the rarest diamond on this earth?

• Black diamond

• Blue diamond

• Red diamond

• Green diamond

Gold is an example of minerals.

• (a) ferrous

• (b) non-ferrous

• (c) both (a) and (b)

• (d) none of these

What are the ways to conserve minerals?

• (a) Recycling of minerals

• (b) Reducing waste in the process of mining

• (c) Both a and b

• (d) None of these