Coal is non-metal because on hitting with hammer it will broken down and it's dull and don't have property such as sonorous, malleable,ductile so it show it is a non -metal.
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Introduction:
Coal is not a metal; it is a fossil fuel that is primarily composed of carbon along with various other elements. However, coal does have important uses in various industries and can be classified as a non-metal.

Uses of Metals:
Metals are widely used in various industries due to their unique properties such as high conductivity, malleability, and ductility. Some common uses of metals include:

1. Construction and Infrastructure:
- Steel, a metal alloy, is used extensively in construction for buildings, bridges, and other infrastructure projects.
- Aluminum is used in the construction of aircraft, vehicles, and lightweight structures.

2. Electrical Conductivity:
- Copper and aluminum are excellent conductors of electricity and are used in electrical wiring, power lines, and electrical appliances.

3. Transportation:
- Metals like iron and steel are used in the manufacturing of cars, trains, ships, and airplanes due to their strength and durability.
- Aluminum is also used in the aerospace industry to reduce weight and increase fuel efficiency.

4. Packaging and Containers:
- Metals such as aluminum and tin are used for packaging food and beverages due to their ability to provide a protective barrier against moisture, light, and air.

5. Industrial Machinery and Tools:
- Metals like iron, steel, and titanium are used in the manufacturing of machinery, tools, and equipment for various industries.

Uses of Non-Metals:
Non-metals, including coal, have their own set of uses in different sectors. Some common uses of non-metals are:

1. Energy Production:
- Coal is used as a fuel to generate electricity in power plants and for heat generation in industries.

2. Chemical Industry:
- Non-metals such as sulfur, phosphorus, and chlorine are used in the production of chemicals, fertilizers, and pharmaceuticals.

3. Construction Materials:
- Non-metallic minerals like limestone, gypsum, and clay are used as raw materials in the construction industry to produce cement, plaster, and bricks.

4. Glass and Ceramics:
- Materials like silica, sand, and clay are used to produce glass, ceramics, and pottery.

5. Agriculture:
- Non-metallic minerals like phosphates are used in fertilizers to provide essential nutrients to plants.

Conclusion:
While coal is not a metal, it is still an important resource in the energy sector. Both metals and non-metals have their own unique uses in various industries, contributing to the development and progress of society.