Metals & Ores — Set 5
Chemistry · धातुएं और अयस्क · Questions 41–50 of 50
Which of the following is a sulfide ore of Copper?
Correct Answer: C. Chalcopyrite
• **Chalcopyrite** = 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.
Pyrolusite is an ore primarily used for the extraction of?
Correct Answer: D. Manganese
• **Manganese** = 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; B: incorrect choice for stated use; C: incorrect choice for stated use.
The ore 'Carnallite' is chemically classified as a?
Correct Answer: A. Chloride
• **Chloride** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: chemical compound but different type; C: chemical compound but different type; D: chemical compound but different type.
Siderite is an iron ore that belongs to which chemical group?
Correct Answer: A. Carbonates
• **Carbonates** = is the correct answer to this question. • **Industrial use** — extracted and processed for various applications. • 💡 Wrong-option analysis: B: chemical compound but different type; C: incorrect choice for stated use; D: chemical compound but different type.
Which of the following ores is a significant source of Uranium?
Correct Answer: C. Pitchblende
• **Pitchblende** = 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.
The mineral 'Malachite' is easily recognized by its color, which is?
Correct Answer: B. Green
• **Green** = produces/emits characteristic color or light. • **Light emission** — produces distinct, visible spectral lines when heated. • 💡 Wrong-option analysis: A: incorrect choice for stated use; C: incorrect choice for stated use; D: incorrect choice for stated use.
Calamine lotion is derived from an ore of which metal?
Correct Answer: D. Zinc
• **Zinc** = 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: different metal element.
Which of these ores is an oxide of Iron with the highest iron content?
Correct Answer: A. Magnetite
• **Magnetite** = 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.
Limestone is the primary source of which alkaline earth metal?
Correct Answer: B. Calcium
• **Calcium** = 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: incorrect choice for stated use; D: incorrect choice for stated use.
Monazite sands are famous for containing which energy-related element?
Correct Answer: A. Thorium
• **Thorium** = 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.