Chapter: 07. Minerals And Ores
Section A: Multiple Choice Questions (5 Marks)
Choose the correct option for each question.
Minerals are extracted from which of these?
(i) Pores
(ii) Ores
(iii) Mines
(iv) Sand Which characteristic indicates that a mineral can be stretched into a thin wire?
(i) Malleability
(ii) Lustre
(iii) Ductility
(iv) Hardness Which of these iron ores is considered the best quality?
(i) Haematite
(ii) Limonite
(iii) Siderite
(iv) Magnetite The lightest metal, often used in aircraft, is extracted from which mineral?
(i) Copper
(ii) Uranium
(iii) Bauxite
(iv) Gold Which of the following is a non-metallic mineral?
(i) Manganese
(ii) Silver
(iii) Limestone
(iv) Copper Section B: Fill in the Blanks (5 Marks)
Complete the sentences with the correct word(s).
All rocks are composed of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. Metallic minerals that contain iron are called _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ minerals. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ is the best conductor of heat and electricity. Petroleum is sometimes referred to as ‘_ _ _ _ _ _ _ _ _ _ _ _ _ _ _’. In underground mining, a long, narrow passage called a _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ is dug vertically deep into the ground. Section C: True or False (5 Marks)
State whether each statement is true or false. If false, correct the statement.
Minerals are pure substances. Non-metallic minerals generally have a shiny appearance. The USA is one of the countries well-endowed with mineral resources. Limonite is an inferior variety of iron ore with only about 48% iron. Compressed Natural Gas (CNG) is an eco-friendly automobile fuel. Section D: Short Answer Questions (6 Marks)
Answer the following questions in one to two sentences.
Name four ways to recognize a mineral. List two ferrous and two non-ferrous minerals. Name two major uses of coal. What is the primary difference between surface mining and underground mining based on mineral depth? Mention one historical fact about India’s early use of iron. Section E: Identifying and Differentiating Concepts (2 Marks)
Explain the difference between the following pair.
Exhaustible vs. Non-renewable resources: Section F: Diagram-Based Question (3 Marks)
Observe the image below and answer the questions.
The image shows a global map indicating the distribution of different mineral resources.
Based on the map, which continent appears to have significant deposits of most of the metallic minerals shown (Iron, Bauxite, Copper, Gold, Manganese, Silver)? Name two countries that appear to have abundant iron (black square) deposits. Which precious metal (red diamond) seems to be widely distributed across North America, South America, Africa, and Australia? Section G: Long Answer Questions (4 Marks)
Answer the following questions in 4 to 5 sentences.
Explain why it is important to conserve mineral resources. Describe the various uses of petroleum in modern society, beyond just fuel for vehicles. 
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