Fill the name of the correct mineral in the crossword below: Acr
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    Minerals and Energy Resources
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    (a) Write two types of metallic minerals with example.

    (b) Mention two minerals in which India is rich and two minerals in which India is deficient.

    (a)The two types of metallic minerals are:

    (i)Ferrous

    (ii)Non-ferrous 

    Ferrous metals - iron-ore and manganese.

    Non-ferrous- copper and bauxite.

    (b) Name of minerals in which India is rich are iron-ore and mica.

    India is deficient in: Copper and zinc.

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    Fill the name of the correct mineral in the crossword below:

    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)

    Across: 1. Manganese, 2. Limestone, 3. Magnetite, 4. Anthracite,

    Across: 1. Manganese, 2. Limestone, 3. Magnetite, 4. Anthracite, 5. Bauxite, 6. Copper, 7. Gypsum.

    Down: 1. Gold, 2. Hematite, 3. Mica, 4. Tertiary, 5. Tin.

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    Describe the importance of minerals in our lives. 

    Minerals are an indispensable part of our lives.

    (i)Almost everything we use, from a tiny pin to a towering building or a big ship, all are made from minerals.

    (ii)The railway lines and the tarmac (paving) of the roads, our implements and machinery too are made from minerals. Cars, buses, trains, aeroplanes are manufactured from minerals and run on power resources derived from the earth.

    (iii)Even the food that we eat contains minerals. In all stages of development, human beings have used minerals for their livelihood, decoration, festivities, religious and ceremonial rites.
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    How is electricity generated by tidel energy? Mention the region in India which provide ideal condition to it. 

    Oceanic tides can be used to generate electricity. Floodgate dams are built across inlets. During high tide water flows into the inlet and gets trapped when the gate is closed. After the tide falls outside the flood gate, the water retained by the floodgate flows back to the sea via a pipe that carries it through a power-generating turbine.

    In India the Gulf of Khambhat, the Gulf of Kuchchh in Gujarat on the western coast and Gangetic delta in Sunderban regions of West Bengal provide ideal conditions for utilising tidal energy.
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    ‘India is fortunate to have fairly rich and varied mineral resources.’ Examine.

    India is fortunate to have fairly rich and varied mineral resources. However, these are unevenly distributed.

    (i)Broadly speaking, peninsular rocks contain most of the reserves of coal, metallic minerals, mica and many other non-metallic minerals.

    (ii)Sedimentary rocks on the western and eastern flanks of the peninsula, in Gujarat and Assam have most of the petroleum deposits.

    (iii)Rajasthan with the rock systems of the peninsula, has reserves of many non-ferrous minerals.

    (iv)The vast alluvial plains of north India are almost devoid of economic minerals.

    (v)These variations exist largely because of the differences in the geological structure, processes and time involved in the formation of minerals.
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