Metals

Description: This quiz is designed to assess your understanding of the properties, behavior, and applications of metals.
Number of Questions: 15
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Tags: metals materials science chemistry physics
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Which of the following is NOT a characteristic property of metals?

  1. High electrical conductivity

  2. High thermal conductivity

  3. Malleability

  4. Brittleness


Correct Option: D
Explanation:

Brittleness is not a characteristic property of metals. Metals are generally malleable and ductile, meaning they can be deformed without breaking.

Which metal is known for its high melting point and is often used in high-temperature applications?

  1. Gold

  2. Tungsten

  3. Aluminum

  4. Copper


Correct Option: B
Explanation:

Tungsten has the highest melting point among all metals, making it suitable for high-temperature applications such as filaments in incandescent light bulbs and electrodes in welding.

What is the primary reason for the high electrical conductivity of metals?

  1. The presence of free electrons

  2. The presence of positively charged ions

  3. The presence of covalent bonds

  4. The presence of ionic bonds


Correct Option: A
Explanation:

Metals have a high electrical conductivity due to the presence of free electrons that can move freely within the metal lattice, allowing for the easy flow of electric current.

Which of the following metals is commonly used in electrical wiring?

  1. Iron

  2. Silver

  3. Copper

  4. Zinc


Correct Option: C
Explanation:

Copper is commonly used in electrical wiring due to its high electrical conductivity, ductility, and resistance to corrosion.

What is the phenomenon where metals lose their electrical resistance at very low temperatures?

  1. Superconductivity

  2. Ferromagnetism

  3. Paramagnetism

  4. Diamagnetism


Correct Option: A
Explanation:

Superconductivity is the phenomenon where metals lose their electrical resistance completely at very low temperatures, allowing electricity to flow without any energy loss.

Which metal is known for its magnetic properties and is commonly used in magnets?

  1. Aluminum

  2. Iron

  3. Lead

  4. Mercury


Correct Option: B
Explanation:

Iron is known for its magnetic properties and is commonly used in magnets. It is a ferromagnetic material, meaning it can be magnetized by an external magnetic field.

What is the process of extracting metals from their ores called?

  1. Metallurgy

  2. Mining

  3. Smelting

  4. Refining


Correct Option: A
Explanation:

Metallurgy is the process of extracting metals from their ores and refining them to obtain pure metals. It involves various steps such as mining, smelting, and refining.

Which metal is commonly used in jewelry and is known for its malleability and ductility?

  1. Gold

  2. Silver

  3. Platinum

  4. Titanium


Correct Option: A
Explanation:

Gold is commonly used in jewelry due to its malleability, ductility, and resistance to corrosion. It is a soft and workable metal that can be easily shaped and formed into intricate designs.

What is the name of the metal that is liquid at room temperature?

  1. Mercury

  2. Gallium

  3. Cesium

  4. Rubidium


Correct Option: A
Explanation:

Mercury is the only metal that is liquid at room temperature. It is a heavy, silvery-white metal that is used in thermometers, barometers, and other scientific instruments.

Which metal is known for its high reactivity and is commonly used in batteries?

  1. Lithium

  2. Sodium

  3. Potassium

  4. Calcium


Correct Option: A
Explanation:

Lithium is known for its high reactivity and is commonly used in batteries due to its ability to store and release large amounts of energy.

What is the name of the metal that is commonly used in coins and is known for its durability and resistance to corrosion?

  1. Nickel

  2. Copper

  3. Zinc

  4. Steel


Correct Option: A
Explanation:

Nickel is commonly used in coins due to its durability, resistance to corrosion, and silvery-white color. It is also used in alloys such as stainless steel.

Which metal is known for its strength and is commonly used in construction and engineering?

  1. Steel

  2. Aluminum

  3. Titanium

  4. Copper


Correct Option: A
Explanation:

Steel is known for its strength and is commonly used in construction, engineering, and automotive applications. It is an alloy of iron and carbon, with other elements added to enhance its properties.

What is the name of the metal that is commonly used in electrical contacts and switches due to its high melting point and resistance to oxidation?

  1. Tungsten

  2. Molybdenum

  3. Tantalum

  4. Niobium


Correct Option: A
Explanation:

Tungsten is commonly used in electrical contacts and switches due to its high melting point, resistance to oxidation, and good electrical conductivity.

Which metal is known for its silvery-white color and is commonly used in mirrors and reflective surfaces?

  1. Silver

  2. Aluminum

  3. Chromium

  4. Tin


Correct Option: A
Explanation:

Silver is known for its silvery-white color and is commonly used in mirrors, reflective surfaces, and jewelry. It is a soft, malleable, and ductile metal with high electrical and thermal conductivity.

What is the name of the metal that is commonly used in food cans and is known for its resistance to corrosion?

  1. Tin

  2. Aluminum

  3. Steel

  4. Copper


Correct Option: A
Explanation:

Tin is commonly used in food cans due to its resistance to corrosion and its ability to protect the contents from spoilage. It is a soft, silvery-white metal that is also used in solder and other alloys.

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