Alloys — Set 5
Chemistry · मिश्र धातुएं · Questions 41–50 of 50
Which of the following is an example of an alloy of Iron and Nickel?
Correct Answer: A. Invar
• **Invar** = is the correct answer to this question. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: B: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Which alloy is used for making permanent springs in watches and precision instruments?
Correct Answer: C. Elinvar
• **Elinvar** = 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; D: different metal element.
The alloy 'Wood's Metal' has a very low melting point and is used in what safety device?
Correct Answer: B. Fire sprinklers
• **Fire sprinklers** = is used for its specific properties and applications. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Which alloy is used in the manufacture of 'Artificial Teeth' and jewelry because it resists tarnishing?
Correct Answer: D. Palladium-Silver alloys
• **Palladium-Silver alloys** = 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: different metal element; C: different metal element.
Which metal is the major component of 'Bronze'?
Correct Answer: B. Copper
• **Copper** = 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.
In which alloy is Zinc the secondary component mixed with Copper?
Correct Answer: D. Brass
• **Brass** = is the correct answer to this question. • **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 the common percentage of Nickel in 'German Silver'?
Correct Answer: D. 10% to 30%
• **10% to 30%** = is commonly used in practical 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.
Which alloy is used to make ship propellers due to its resistance to seawater corrosion?
Correct Answer: C. Phosphor Bronze
• **Phosphor Bronze** = 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: different metal element; D: different metal element.
Which of these is a solid solution of one or more elements in a metal?
Correct Answer: C. Alloy
• **Alloy** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: incorrect choice for stated use; B: incorrect choice for stated use; D: incorrect choice for stated use.
Which alloy is used in the manufacture of high-temperature gas turbine blades?
Correct Answer: A. Superalloys (Nickel-based)
• **Superalloys (Nickel-based)** = is used for its specific properties and applications. • **Key characteristic** — possesses unique properties for its intended use. • 💡 Wrong-option analysis: B: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.