Alloys — Set 4
Chemistry · मिश्र धातुएं · Questions 31–40 of 50
Which of the following is a characteristic of alloys compared to pure metals?
Correct Answer: B. Lower melting point
• **Lower melting point** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: incorrect choice for stated use; C: different metal element; D: incorrect choice for stated use.
What are the constituent metals of 'Gun Metal'?
Correct Answer: B. Copper, Tin, and Zinc
• **Copper, Tin, and Zinc** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: different metal element; C: different metal element; D: different metal element.
Which alloy is used in the manufacture of precision balance beams and measuring tapes?
Correct Answer: B. Invar
• **Invar** = is used for its specific properties and applications. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: A: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Duralumin is an alloy made of Aluminum, Copper, Magnesium, and which other element?
Correct Answer: A. Manganese
• **Manganese** = is the correct answer to this question. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: B: different metal element; C: different metal element; D: different metal element.
What is the main metal in 'Type Metal' used in printing presses?
Correct Answer: A. Lead
• **Lead** = is used for its specific properties and applications. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: different metal element; C: different metal element; D: different metal element.
Which alloy is commonly referred to as 'White Gold' in the jewelry industry?
Correct Answer: A. Gold and Silver/Palladium
• **Gold and Silver/Palladium** = is commonly used in practical applications. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: B: different metal element; C: different metal element; D: different metal element.
Which alloy is primarily used to make the base of electric bulbs and household fixtures?
Correct Answer: D. Brass
• **Brass** = is used for its specific properties and applications. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: A: incorrect choice for stated use; B: incorrect choice for stated use; C: incorrect choice for stated use.
What is 'Pewter' primarily composed of?
Correct Answer: B. Tin
• **Tin** = serves as the primary component or element. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: A: different metal element; C: different metal element; D: different metal element.
Which alloy is used for making powerful magnets in modern headphones?
Correct Answer: B. Neodymium-Iron-Boron
• **Neodymium-Iron-Boron** = is used for its specific properties and applications. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: A: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Babbitt metal is an alloy used primarily for what industrial part?
Correct Answer: A. Bearings
• **Bearings** = serves as the primary component or element. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: different metal element; C: incorrect choice for stated use; D: different metal element.