Metal Questions

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Very Short Answers Questions [1 Mark Questions]

Ques. Which among the following is the strongest metal?

1. Hydrogen
2. Tungsten
3. Calcium
4. Chlorine

Ans. The correct answer is b. Tungsten

Explanation: The strongest metal among the given options is tungsten. It is the strongest metal in the universe and one of the rarest metals.

Ques. Which of these metals does not occur in a free state?

1. Gold
2. Silver
3. Sodium
4. Copper

Ans. The correct answer is c. Sodium

Explanation: As sodium is an extremely reactive metal, it cannot exist free state in the crust of the earth.

Ques. Can metals be made into sheets?

1. True
2. False

Ans. The correct answer is a. True

Explanation: Metals are malleable. The ability to be hammered into flat sheets is referred to as malleability in materials.

Ques. Which among the following is considered a liquid metal?

1. Gold
2. Mercury
3. Sulfur
4. Tungsten

Ans. The correct answer is b. Mercury

Explanation: Since mercury is liquid at or near room temperature, it is referred to as a liquid metal.

Ques. Which among the following is a metal?

1. Sulfur
2. Hydrogen
3. Chlorine
4. Sodium

Ans. The correct answer is d. Sodium

Explanation: Among the given options sodium is a metal. It is a very soft silvery-white metal.

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Short Answers Questions [2 Marks Questions]

Ques. What is metal?

Ans. A metal is a material that has a lustrous appearance when freshly processed, polished, or fractured, and conducts electricity and heat rather effectively. Metals are malleable and ductile. These characteristics are the outcome of the metallic bond that exists between the metal's atoms or molecules.

Ques. Is Diamond a metal or nonmetal?

Ans. Diamond is a nonmetal Carbon exists in several forms, one of which is diamond, which is not an element. In the exceptional category, diamond is not considered a nonmetal.

Ques. What is ductility?

Ans. Ductility is the property of the metal that makes it stretch instead of breaking when pulled. In other words, a material's ductile qualities are its capacity to experience considerable plastic deformation under tensile stress just before rupture.

Ques. Which metal is best for the human body?

Ans. Certain elements are considered to as essential elements because they are required by the human body. 

• Sodium, potassium, magnesium, and zinc are the metals that are essential to maintaining human health.
• The presence of sodium is required for the conduction of nerve impulses.
• Potassium is required for the body to maintain fluid balance.
• Magnesium is necessary for the smooth operation of the muscles and nerves.
• Zinc is required for the growth of cells.

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Long Answers Questions [3 Marks Questions]

Ques. What are the different uses of metals?

Ans. The different uses of metals are

• In electronics: Due to their high electrical conductivity, metals are utilized to create cables and other components for electrically powered devices. Televisions, smartphones, refrigerators, irons, and laptops are common examples.
• In medicine: Numerous processes, including the transmission of nerve impulses, the movement of oxygen, the reaction of enzymes, etc., depend on the presence of metal elements. As a result, some medicines work in combination with metal compounds to treat particular deficiencies or diseases. In the form of antacids, metals including iron, calcium, magnesium, potassium, titanium, and aluminum are commonly used in medicine.
• Decorative products: Precious metals include metals like platinum, gold, and silver, and have a high economic worth. These metals are commonly used to create jewelry sets and other ornamental items.

Ques. How are metals extracted from their ores?

Ans. The following stages constitute the extraction of metals from ores.

• Grinding and Crushing: In ball mills and crushers, the larger ore pieces that are removed are crushed and processed. It helps to increase the surface area of the pieces to facilitate better chemical reactions in the future. Technically, it is known as pulverization.
• Concentrating the Ore: This step includes the concentration of ore by removing impurities. This process is also known as ore dressing.
• Calcination and Roasting: The ore is then heated either with or without air after being concentrated. This depends on the element and its chemical characteristics. Sulfide ores, for example, are heated in the presence of oxygen. It's known as roasting. On the other hand, carbonated metal ores are heated in a vacuum for simple metal extraction. It is known as calcination.

Ques. Explain the different methods to prevent the corrosion of metals.

Ans. The following methods are used to prevent the metals from corrosion

• Galvanization: Zinc is applied as a thin coating on galvanized metal to prevent corrosion. When exposed to air, the zinc oxidizes, forming a protective layer on the metal's surface.
• Alloying: It is a technique for modifying a metal's characteristics by combining it with another metal or nonmetal. When chromium and nickel are alloyed with iron, stainless steel is produced. Steel made of stainless material never rusts.
• Painting: Iron rusting may be easily prevented by painting the surface to shield it from air and moisture.
• Greasing/Oiling: Some grease oil is placed on the surface of an iron object to prevent rusting.

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Very Long Answers Questions [5 Marks Questions]

Ques. What are the differences between Metals and Non-metals?

Ans. The following are the differences between the metals and non-metals

• Physical properties: Metals have high melting and boiling temperatures, as well as have a metallic glow, and are normally solid at room temperature. Non-metals, on the other hand, are usually gaseous or brittle solids with low melting and boiling temperatures and no metallic glow.
• Conductivity: Metals conduct heat and electricity well, whereas nonmetals conduct heat and electricity poorly.
• Density: With the exception of light gases such as hydrogen and helium, metals are normally denser than nonmetals.
• Malleability and ductility: Metals are malleable and ductile, meaning they can be easily shaped and formed. Nonmetals are often brittle, meaning they cannot be easily shaped or formed.
• Reactivity: Metals commonly react with nonmetals to generate compounds, whereas nonmetals commonly react with other nonmetals to form compounds.
• Oxidation state: Nonmetals have a negative oxidation state and gain electrons to create anions, whereas metals have a positive oxidation state and lose electrons to generate cations.

Ques. What are the chemical properties of metals?

Ans. The chemical properties of metals are

• Metals typically possess a high density.
• Metals are malleable and ductile.
• Metals combine with other metals or nonmetals to produce alloys.
• Some metals, such as iron, when exposed to moist air, react with oxygen to form rust.
• Metals, with the exception of lead, are excellent heat and electrical conductors.
• With the exception of Mercury, all other metals are solid at room temperature. Mercury, on the other hand, is a liquid.
• Metal oxide is produced when metals burn in oxygen. When highly reactive metals are burned in oxygen, they react violently.
• Metals such as potassium and salt are kept in oil because they react quickly with oxygen. They will be extremely reactive metals.
• Silver, gold, platinum, and other less reactive metals do not tarnish easily. They keep their shine and luster.
• When metals and water interact, hydrogen gas and metal oxide are produced.
• Metal hydroxide is created when soluble metal oxides dissolve in water.

Ques. What are the physical properties of metals?

Ans. Below is a list of some of the main physical properties of metals.

• Thin sheets of metal can be hammered out. It indicates that they have the quality of malleability. 
• Metals are ductile. They are able to be drawn into wires. 
• Metals are excellent heat and electrical conductors. 
• Metals have a shiny look because they are lustrous.
• The tensile strength of metals is large. It implies that they can support large weights.
• Metals are sonorous. It indicates that they produce a ringing sound when we strike them. 
• Metals are hard. It implies that they are difficult to cut.

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