Veena Bhargava Textbook Solutions: Mineral and Energy Resources - I

Multiple Choice Questions 

Where can metallic minerals be found?

1. Sedimentary rocks
2. Metamorphic rocks
3. Igneous rocks
4. In all the above

Ans: (c)

Explanation: Metallic minerals are often concentrated in igneous rocks because they crystallise from cooling magma and hydrothermal fluids. Many important metal ores, such as magnetite and certain copper ores, are commonly associated with igneous processes and intrusions.

What percentage of pure iron does Magnetite type of Iron ore contain?

1. 80% of pure iron
2. 72% of pure iron
3. 60% of pure iron
4. 40% of pure iron

Ans: (b)

Explanation: Magnetite (Fe₃O₄) is one of the richest iron ores and contains about 72% pure iron by weight in its ideal form, which makes it an important source of iron for metallurgical use.

What are the main applications of iron ore?

1. Ship building
2. Bolts, nails and screws
3. Roads and railways
4. All the above

Ans: (d)

Explanation: Iron ore is the primary raw material used to make steel. Steel is then used across many sectors - ship building, fasteners like bolts and nails, and construction of roads and railways - so all the options listed are correct uses of iron-derived steel.

Which state has the largest reserves of magnetite and haematite?

1. Odisha
2. Rajasthan
3. Karnataka
4. Madhya Pradesh

Ans: (c)

Explanation: Karnataka is known for large deposits of magnetite and haematite, particularly in the Ballari-Bellary region and other iron-rich belts. These deposits contribute substantially to the state's iron-ore reserves.

Which mineral is vital for the production of iron and steel?

1. Copper
2. Iron
3. Coal
4. Manganese

Ans: (d)

Explanation: Manganese is a vital alloying element in the production of iron and steel. It improves the strength, toughness and hardenability of steel and helps remove oxygen and sulphur impurities during smelting.

Manganese is primarily used in the production of which material?

1. Bolts & nails
2. Sponge
3. Iron appliances
4. Ferromanganese

Ans: (d)

Explanation: Manganese is mainly used to produce ferromanganese and other manganese alloys. These alloys are added to steel to improve its strength and resistance to wear and corrosion.

Which mineral is known for its high ductility?

1. iron ore
2. manganese
3. copper
4. bauxite

Ans: (c)

Explanation: Copper is highly ductile and malleable, which means it can be drawn into thin wires and shaped without breaking. This property makes it ideal for electrical wiring and many engineering uses.

What materials are made from Bauxite?

1. iron ore
2. bauxite
3. copper
4. none of the above

Ans: (b)

Explanation: Bauxite itself is the ore of aluminium and is processed to produce aluminium metal and its products. Thus, among the given options, bauxite is the correct choice as the material associated with production from bauxite.

Which location is the highest producer of copper?

1. Balaghat district in Madhya Pradesh
2. Khetri in Rajasthan
3. Hazaribagh in Jharkhand
4. Salem in Tamil Nadu

Ans: (a)

Explanation: Balaghat district in Madhya Pradesh is one of India's major copper-producing areas, with significant mining and processing activity centred there.

Where is the leading producer of manganese located?

1. Sundargarh in Odisha
2. Chitradurg in Karnataka
3. Ratnagiri district in Maharashtra
4. Balaghat district in Madhya Pradesh

Ans: (a)

Explanation: Sundargarh in Odisha is a leading centre for manganese production in India, with extensive deposits and active mining operations that supply the steel and alloy industries.

What are the prominent minerals found in India?

Ans: The prominent minerals found in India include:

1. Iron ore
2. Manganese
3. Nickel
4. Copper
5. Mica
6. Limestone
7. Gypsum

Which state is the leading producer of Iron Ore in India?

Ans: Odisha is the leading state in the production of iron ore in India, with large deposits and extensive mining operations contributing significantly to national output.

Identify two locations in India where Bauxite is found.

Ans: Two locations in India where bauxite is found are:

1. Sundargarh (Odisha)
2. Palamau (Jharkhand)

What are two uses of Bauxite?

Ans: The uses of bauxite include:

1. Bauxite serves as the primary raw material for the production of aluminium, which is used in making aircraft, ships and utensils.
2. It is also used in the manufacture of cement, certain chemicals and as an abrasive in some industrial processes.

Why is it essential to conserve mineral resources?

Ans: Conserving mineral resources is crucial because:

1. Mineral resources are limited and non-renewable; once exhausted they cannot be replaced within human time scales.
2. High rates of consumption and wasteful use threaten future availability, so conservation and efficient use help ensure resources for coming generations.

Name three states where Iron ore is found in India.

Ans: Iron ore can be found in the following states:

1. Karnataka
2. Odisha
3. Chhattisgarh

List the uses of Manganese.

Ans: The uses of manganese are:

1. Manganese is critical for the production of iron and steel as an alloying element.
2. It is used in the manufacture of bleaching powder, certain insecticides and dry batteries.
3. Manganese improves the strength of steel, removes impurities and enhances resistance to corrosion.
4. It forms alloys with aluminium and other metals to produce corrosion-resistant materials.
5. Manganese is used in producing ferromanganese, silico-manganese and chrome-manganese alloys.
6. It is also used in paints, pigments and ceramics.

Why is Manganese important for iron and steel production?

Ans: Manganese is important for iron and steel production for the following reasons:

1. It reduces brittleness in steel and thereby enhances its strength and toughness.
2. Manganese helps remove impurities such as sulphur and oxygen during smelting and improves the steel's resistance to corrosion.

What are the main uses of copper?

Ans: The main uses of copper include:

1. Copper is extensively used in electrical machinery and wiring because of its excellent electrical conductivity.
2. It is used in the automobile industry, telecommunication equipment and various engineering applications.
3. Copper is a key component in alloys such as brass and bronze.
4. It is also used in manufacturing arms, ammunition and household utensils.

Identify the states where copper is found.

Ans: Copper can be found in the following states:

1. Madhya Pradesh
2. Rajasthan
3. Jharkhand

What makes copper significant for electrical machinery?

Ans: Copper is significant for electrical machinery due to:

1. Its high ductility, which allows it to be drawn into thin wires.
2. Its excellent thermal and electrical conductivity, making it ideal for electrical wires, motors and generators.