Minerals and Energy Resources — Questions & Answers

Sample questions from Minerals and Energy Resources

1. Q1. 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

   • A.coal
   • B.bauxite✓
   • C.gold
   • D.zinc
   Solution

   Bauxite is formed by the decomposition of surface rocks and the removal of soluble constituents, leaving behind a residual mass of weathered material rich in aluminium — option (b).

2. Q2. Bauxite deposits in India are concentrated in areas like Amarkantak plateau, Maikal hills and the Bilaspur-Katni plateau. What does this concentration reveal about the underlying geology of these regions?

   • A.These are regions of extensive lateritic weathering of aluminium-rich rocks under tropical climatic conditions✓
   • B.These are purely volcanic regions with no weathering
   • C.These are cold, arid regions unsuitable for mineral formation
   • D.These regions have no connection between climate and mineral type
   Solution

   Bauxite forms through intense lateritic weathering of aluminium-silicate rocks in humid tropical climates; the concentration of bauxite in these plateau regions reflects long-term tropical weathering of the parent rock.

3. Q3. Gold, silver, tin and platinum are commonly associated with which mode of occurrence formed by the action of running water?

   • A.Vein deposits
   • B.Placer deposits in sands of valley floors and river beds✓
   • C.Bedded deposits in sedimentary rocks
   • D.Deposits in ocean beds only
   Solution

   Placer deposits form when minerals occur in sands of valley floors and the base of hills, carried in small particles by running water and deposited along the course.

4. Q4. Koderma, in Jharkhand is the leading producer of which one of the following minerals? (a) bauxite (b) mica (c) iron ore (d) copper

   • A.bauxite
   • B.mica✓
   • C.iron ore
   • D.copper
   Solution

   The Koderma-Gaya-Hazaribagh belt of Jharkhand, on the northern edge of the Chota Nagpur plateau, is the leading producer of mica in India — option (b).

5. Q5. Muppandal in Tamil Nadu is well known in India for which renewable energy installation?

   • A.Largest wind farm cluster✓
   • B.Largest solar park
   • C.Major tidal energy station
   • D.Largest hydroelectric dam
   Solution

   Muppandal in Tamil Nadu hosts one of India's largest wind farm clusters, harnessing the strong and consistent winds of the region for electricity generation.

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