Metals & Ores — Set 3
Chemistry · धातुएं और अयस्क · Questions 21–30 of 50
Which mineral is a source of Magnesium and is also known as 'Bitter Salt'?
Correct Answer: C. Epsomite
• **Epsomite** = is the correct answer to this question. • **Chemical properties** — possesses specific reactivity and behavior. • 💡 Wrong-option analysis: A: incorrect choice for stated use; B: incorrect choice for stated use; D: incorrect choice for stated use.
Wolframite is the most important ore of which metal?
Correct Answer: D. Tungsten
• **Tungsten** = 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; C: incorrect choice for stated use.
Beryl is the primary ore for which lightweight metal?
Correct Answer: D. Beryllium
• **Beryllium** = 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; C: incorrect choice for stated use.
Which of the following is a carbonate ore of Calcium?
Correct Answer: A. Limestone
• **Limestone** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Anglesite is an ore formed from the oxidation of which mineral?
Correct Answer: A. Galena
• **Galena** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Scheelite is an ore used for the extraction of which element?
Correct Answer: B. Tungsten
• **Tungsten** = 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 of the following is a common ore of Copper?
Correct Answer: C. Chalcocite
• **Chalcocite** = is commonly used in practical applications. • **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.
The ore 'Dolomite' contains both Magnesium and which other metal?
Correct Answer: D. Calcium
• **Calcium** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: different metal element; B: incorrect choice for stated use; C: different metal element.
Pyrite is often called 'Fool's Gold' but is actually an ore of?
Correct Answer: D. Iron
• **Iron** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: A: different metal element; B: different metal element; C: different metal element.
Which of these minerals is an ore of Potassium?
Correct Answer: C. Sylvite
• **Sylvite** = 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.