Metal MCQ Quiz - Objective Question with Answer for Metal - Download Free PDF

The correct answer is Zinc and Lead are more reactive than Copper..

Key Points

• Zinc and Lead are higher in the reactivity series than Copper, making them more reactive elements.
• In a displacement reaction, a more reactive metal will displace a less reactive metal from its compound.
• When Zinc reacts with Copper sulfate (CuSO₄), Zinc displaces Copper because Zinc is more reactive.
• Similarly, Lead displaces Copper from Copper chloride (CuCl₂) due to its higher reactivity compared to Copper.
• This reactivity series is a fundamental concept in chemistry for predicting the outcomes of displacement reactions.

Additional Information

• Reactivity Series
  • The reactivity series is a list of metals arranged in order of decreasing reactivity.
  • It helps in predicting the products of displacement reactions and the reactivity of metals with acids and water.
• Displacement Reactions
  • These are reactions where a more reactive element displaces a less reactive element from its compound.
  • They are commonly observed in aqueous solutions of metal salts.
• Electrochemical Series
  • It is a series of elements arranged by their standard electrode potentials.
  • It is useful in predicting the direction of redox reactions.
• Uses of Zinc and Lead
  • Zinc is used for galvanizing iron, making alloys, and in batteries.
  • Lead is used in batteries, radiation shielding, and in some types of glass.

CONCEPT:

Aluminum Bronze Alloy Composition

• Aluminum bronze is a type of bronze that is primarily composed of copper and aluminum.
• It is an alloy where aluminum is added to copper, typically in proportions ranging from 5% to 11% aluminum.
• Aluminum bronze is known for its high strength, corrosion resistance, and wear resistance, making it useful in various industrial applications.

EXPLANATION:

• Aluminum bronze is not an alloy of aluminum and silver, zinc, or tin. These combinations would form different types of alloys with distinct properties.
• Instead, aluminum bronze is specifically an alloy of copper and aluminum. The addition of aluminum to copper enhances the alloy's strength and corrosion resistance.
• Aluminum bronze is widely used in applications such as marine hardware, aerospace components, and industrial equipment due to its durability and resistance to oxidation.

Therefore, the correct answer is Aluminum and Copper.

The correct answer is Zinc and Lead are more reactive than Copper..

Key Points

• Zinc and Lead are higher in the reactivity series than Copper, making them more reactive elements.
• In a displacement reaction, a more reactive metal will displace a less reactive metal from its compound.
• When Zinc reacts with Copper sulfate (CuSO₄), Zinc displaces Copper because Zinc is more reactive.
• Similarly, Lead displaces Copper from Copper chloride (CuCl₂) due to its higher reactivity compared to Copper.
• This reactivity series is a fundamental concept in chemistry for predicting the outcomes of displacement reactions.

Additional Information

• Reactivity Series
  • The reactivity series is a list of metals arranged in order of decreasing reactivity.
  • It helps in predicting the products of displacement reactions and the reactivity of metals with acids and water.
• Displacement Reactions
  • These are reactions where a more reactive element displaces a less reactive element from its compound.
  • They are commonly observed in aqueous solutions of metal salts.
• Electrochemical Series
  • It is a series of elements arranged by their standard electrode potentials.
  • It is useful in predicting the direction of redox reactions.
• Uses of Zinc and Lead
  • Zinc is used for galvanizing iron, making alloys, and in batteries.
  • Lead is used in batteries, radiation shielding, and in some types of glass.