Transition Metals And Their Uses Quiz

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  • 1/10 Questions
    Where on the table do you find the transition elements? - ProProfs

    Where on the table do you find the transition elements?

    • A
    • B
    • C
    • The small white square at the top
    • Nowhere
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About This Quiz

Transition metals, easily summed up as any element in the d-block of the periodic table, are known as such because chemically, they show variable valency and a strong tendency to form coordination compounds, as many of their compounds are coloured.

Transition Metals And Their Uses Quiz - Quiz

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  • 2. 

    The symbol for Gold is

    • Au

    • Ag

    • Ni

    • G

    • Go

    Correct Answer
    A. Au
    Explanation
    The correct symbol for Gold is Au, derived from its Latin name "aurum." This symbol is used internationally to represent Gold in various contexts such as chemical equations, scientific research, and financial markets.

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  • 3. 

    Which gas is given off when metal carbonates decompose thermally?

    • Carbon dioxide

    • Oxygen

    • Nitrogen

    • Hydrogen

    Correct Answer
    A. Carbon dioxide
    Explanation
    When metal carbonates decompose thermally, they break down into their respective metal oxide and carbon dioxide. Therefore, the gas given off during this process is carbon dioxide.

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  • 4. 

    Copper is the most used transition metal because....

    • It is cheap

    • It is strong and cheap

    • It is strong and a good conductor of electricity

    • It can be used as a bracelet to help people with stiff joints

    • It is sonorous

    Correct Answer
    A. It is strong and a good conductor of electricity
    Explanation
    Copper is the most used transition metal because it is strong and a good conductor of electricity. This makes it ideal for various applications, especially in electrical wiring and electronic devices. Its strength ensures durability, while its excellent conductivity allows for efficient flow of electricity. Additionally, copper is relatively inexpensive compared to other transition metals, making it a cost-effective choice for many industries.

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  • 5. 

    What is the catalyst in the Haber process?

    • Nickel

    • Gold

    • Silver

    • Iron

    Correct Answer
    A. Iron
    Explanation
    Iron is the catalyst in the Haber process. The Haber process is a chemical reaction used to produce ammonia, which is an important compound in the production of fertilizers and other chemicals. The catalyst, in this case, iron, helps to speed up the reaction without being consumed itself. Iron acts as a surface for the reactant molecules to bind to, allowing them to come together and react more easily. This increases the rate of ammonia production and makes the process more efficient.

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  • 6. 

    A precipitate is a ....

    • Liquid

    • Gas

    • Solid

    • Gel

    • Vapour

    Correct Answer
    A. Solid
    Explanation
    A precipitate is a solid substance that forms when two solutions react with each other. It is formed when the reaction causes the formation of insoluble particles, which then settle out of the solution. Therefore, the correct answer is solid.

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  • 7. 

    Copper compounds are

    • Blue

    • Pale Green

    • Orange/Brown

    • Colourless

    • Green

    Correct Answer
    A. Blue
    Explanation
    Copper compounds are blue because they often contain copper ions that absorb light in the red and green regions of the electromagnetic spectrum, while reflecting or transmitting blue light. This selective absorption of light results in the blue color observed in many copper compounds.

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  • 8. 

    Which metal is used to harden oils when making margarine?

    • Iron

    • Gold

    • Siver

    • Sodium

    • Nickel

    Correct Answer
    A. Nickel
    Explanation
    Nickel is used to harden oils when making margarine. This is because nickel acts as a catalyst in the hydrogenation process, which is used to convert liquid vegetable oils into solid fats. Hydrogenation involves adding hydrogen atoms to unsaturated fatty acids in the oil, making them saturated and solid at room temperature. Nickel helps to speed up this process and improve the texture and consistency of the margarine.

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  • 9. 

    Precipitates are formed when transition metal compounds react with ....

    • Sodium

    • Sodium solution

    • Sodium hydroxide

    • Water

    • Ammonia

    Correct Answer
    A. Sodium hydroxide
    Explanation
    Transition metal compounds react with sodium hydroxide to form precipitates. Sodium hydroxide is a strong base that can react with transition metal ions to form insoluble metal hydroxides. This reaction is commonly used in qualitative analysis to identify transition metal ions in a solution. When sodium hydroxide is added to a solution of a transition metal compound, a colored precipitate is formed, indicating the presence of a specific transition metal ion.

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  • 10. 

    Gold is used in dental work because .....

    • It is sonorous

    • It is expensive

    • It is strong

    • It is fairly unreactive

    • It is a good conductor of electricity

    Correct Answer(s)
    A. It is strong
    A. It is fairly unreactive
    Explanation
    Gold is used in dental work because it is strong and fairly unreactive. Gold is a highly durable and resilient metal, making it suitable for use in dental restorations that need to withstand the forces of chewing and biting. Additionally, gold is fairly unreactive, meaning it does not easily corrode or react with other substances in the mouth, ensuring its longevity and stability in dental applications.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 10, 2009
    Quiz Created by
    Stillsmiling
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