question_answer11) Multiple choice questions. (i) Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material? (a) Coal (b) Bauxite (c) Gold (d) Zinc (ii) Koderma, in Jharkhand is the leading producer of which one of the following minerals? (a) Bauxite (b) Mica (c) Iron ore (d) Copper (iii), Minerals are deposited and accumulated in the stratas of which of the following rocks? (a) Sedimentary rocks (b) Metamorphic rocks (c) Igneous rocks (d) None of these (iv) Which one of the following minerals is contained in Monazite sand? (a) Oil (b) Uranium (c) Thorium (d) CoalView Answer play_arrow
question_answer12) Answer the following questions in about 30 words. (i) Distinguish between the following in not more than 30 words. (a) Ferrous and non-ferrous minerals (b) Conventional and non-conventional sources of energy (ii) What is a mineral? (iii) How are minerals formed in igneous and metamorphic rocks? (iv) Why do we need to conserve mineral resources?View Answer play_arrow
question_answer14) ACROSS 1. A ferrous mineral (9) 2. Raw material for cement industry (9) 3. Finest iron ore with magnetic properties (9) 4. Highest quality hard coal (10) 5. Aluminium is obtained from this ore (7) 6. Khetri mines are famous for this mineral (6) 7. Formed due to evaporation (6) DOWN 1. Found in placer deposit (4) 2. Iron ore mined in Bailadila (8) 3. Indispensable for electrical industry (4) 4. Geological Age of coal found in north east India (8) 5. Formed in veins and lodes (3)View Answer play_arrow
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