Test: Mineral Resources - 2 - Class 4 MCQ

Ores are materials that are extracted from deep beneath the Earth's surface and are then refined to obtain pure metals. They play a crucial role in providing us with various metals like iron, copper, and aluminium.

Wind energy is not obtained from beneath the Earth's surface; it is a renewable energy source that harnesses the power of wind to generate electricity.

The states of Odisha, Bihar, and Madhya Pradesh have large quantities of iron ore deposits. These ores are essential for the production of steel.

Copper was the first metal discovered by humans. Its excellent conductivity makes it a crucial material for making electric wires.

Petroleum is refined to obtain various valuable products such as kerosene, petrol, diesel, grease, and paraffin wax, which have numerous industrial and domestic uses.

Wind power and solar energy are highlighted as promising substitutes for coal and petroleum due to their renewable nature. However, solar energy conversion technology is currently expensive and under development.

Gold is primarily mined in the Kolar region of Karnataka.

Copper is used to make electric machines due to its excellent electrical conductivity.

Coal is the primary source of energy used at thermal power plants to produce electricity through combustion.

Using minerals carefully and seeking alternative energy sources are crucial steps to address issues like mineral resource depletion and environmental problems such as air pollution caused by the combustion of coal and petroleum.