Explanation

Stainless steel is a alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties.

Explanation

Copper, silver, aluminum, gold, steel, and brass are common conductors of electricity.

The most highly conductive metals are silver, copper, and gold

Silver is the first-best conductor of heat.

Copper is the second-best conductor of heat.

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ND30-12-2022

Explanation

• The largest Coal Producing Country in the World in China
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• China is by far the leading hard coal producer worldwide, over the last three decades.
  
• the five leading coal-producing countries in the world.
  

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Explanation

Symbol of mercury: Hg

Atomic number: 80

Boiling Point: 356.7 C

Explanation

The 100 percent pure gold is 24-carat gold.

Lower cartages contain less gold 18-carat gold contains 75 percent gold and 25 per cent other metals, often copper or silver.

Carat is the unit of measurement for the physical weight of diamonds/Gold.

ND16-8-2023

Explanation

Geologists are scientists who study a planet's solid features, like soil, rocks, and minerals.

Explanation

Steel is an alloy of iron (Fe) and carbon (C), with small amounts of other elements like manganese, chromium, and vanadium.

It's a mixture of two or more elements, where at least one is a metal, making it an alloy.

Explanation

• An alloy of Cu - Sn is called Bell metal.
• Bell metal is a specific type of bronze with a higher tin content, commonly used for making bells.

Explanation

 Hematite is an ore of iron

It is one of the most abundant minerals on Earth's surface.

It is a common rock-forming mineral

That is found at locations throughout the world in:

• sedimentary rocks
• metamorphic rocks
• igneous rocks 

Explanation