Mineral and Power Resources

Q1. Fill in the blanks.

                         i.        Chile is one of the leading producers of copper in the world.

                        ii.        Metallic minerals may be ferrous or non-ferrous.

                       iii.        Electricity from coal is called thermal power.

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

                        v.        Minerals can be extracted by mining, drilling or quarrying.

                       vi.        Petroleum is found between the layers of rocks and is drilled from oil fields located in off-shore and coastal areas.

         vii.        Graphite used in pencil is also a mineral.

         viii.        Switzerland has no known mineral deposit in it.

                        ix.        One fourth of the world’s electricity is produced by hydel power.

Q2. True/False

                          i.        All minerals are rocks but all rocks are not minerals. True

                         ii.        Minerals are inexhaustible. False

                        iii.        Copper is another metal used in everything from coins to pipes. True

                        iv.        Karnataka is not a producer of mica. True

                         v.        Gold, silver and copper are ferrous mineral. False

                       vi.        Deep bores dug to reach mineral deposits are called shaft. True

         vii.        Chile and Peru are leading producers of copper. True

Q3. Name any three common minerals used by you every day.

Ans. Salt, copper, iron

Q4. Name two naturally occurring radioactive elements.

Ans.  Uranium and Thorium

Q5. Name one ore of Aluminum.

Ans.  Bauxite

Q6. Which country is the largest producer of bauxite in the world?

Ans.  Australia is the largest producer of bauxite in the world.

Q7. Which is the most abundantly found fossil fuel?

Ans.  Coal is the most abundantly found fossil fuel.

Q8. Which country has the world’s largest geothermal power plants?

Ans. USA has the world’s largest geothermal power plants.

Q9. Name the place in India which has huge tidal mill farms.

Ans. Gulf of Kachchh in India has huge tidal mill farms.

Q10. Name two regions rich in natural gas resources.

Ans. Two regions rich in natural gas resources are Russia and Norway.

Q11. Which continent produces more than half of the world’s tin?
Or
Which continent is largest producer of tin?

Ans. Asia produces more than half of the world’s tin.

Q12. Which continent is the leading producer of iron ore in the world?
Or
Which continent is largest producer of iron ore?

Ans. Europe is the leading producer of iron-ore in the world.

Q13. Name two minerals in whose production India contributes a significant part.

Ans.  Mica and Salt

Q14. Name the first country to develop hydroelectricity in the world.
Or
Which was the first country to develop hydroelectricity?

Ans.  Norway was the first country in the world to develop hydroelectricity.

Q15. In which industry is silicon important? From which ore is it obtained?

Ans.  Silicon, used in the computer industry is obtained from quartz.

Q16. Which is the world’s largest producer of diamonds, gold and platinum?

Ans.  Africa is the world’s largest producer of diamonds, gold and platinum.

Q17. What is mineral?

Ans.  A naturally occurring substance that has a definite chemical composition is a mineral.

Q18. Name the leading tin producers in Asia.

Ans.  China, Malaysia and Indonesia are among the world’s leading tin producers.

Q19. Which two areas in Australia have large deposits of gold?

Ans.  Kalgoorlie and Coolgardie areas of western Australia have the largest deposits of gold.

Q20. What is natural gas?

Ans.  Natural gas is found with petroleum deposits and is released when crude oil is brought to the surface.

Q21. Where are Uranium and Thorium found in India?

Ans. In India Rajasthan and Jharkhand have large deposits of Uranium.

Thorium is found in large quantities in the Monozite sands of Kerala.