AP POLYCET CHEMISTRY Multiple Choice Questions (MCQs)
AP POLYCET Chemistry - Principles of Metallurgy - Multiple Choice Questions
-
Which of the following methods is used for the extraction of iron from its ore?
- A) Electrolysis
- B) Roasting
- C) Carbon reduction
- D) Hydrolysis
Answer: C) Carbon reduction
-
In the extraction of aluminium, which of the following is used as the electrolyte?
- A) NaCl
- B) KCl
- C) Al2O3
- D) HCl
Answer: C) Al2O3
-
The process of removing impurities from the metal surface by heating is called:
- A) Calcination
- B) Roasting
- C) Refining
- D) Smelting
Answer: C) Refining
-
Which of the following is used in the extraction of copper?
- A) Hydrometallurgy
- B) Electrometallurgy
- C) Pyrometallurgy
- D) All of the above
Answer: D) All of the above
-
Which of the following ores is used to extract iron?
- A) Bauxite
- B) Haematite
- C) Magnetite
- D) Both B and C
Answer: D) Both B and C
-
Which of the following processes is used to remove sulfur from an ore?
- A) Roasting
- B) Smelting
- C) Calcination
- D) Refining
Answer: A) Roasting
-
The process of heating an ore in the presence of air to convert it into its oxide is known as:
- A) Roasting
- B) Smelting
- C) Leaching
- D) Electrolysis
Answer: A) Roasting
-
The Hall-Héroult process is used for the extraction of:
- A) Iron
- B) Copper
- C) Aluminium
- D) Zinc
Answer: C) Aluminium
-
Which of the following metals is extracted by the process of electrolysis?
- A) Iron
- B) Aluminium
- C) Copper
- D) All of the above
Answer: B) Aluminium
-
Which of the following is used to extract zinc from its ore?
- A) Electrolysis
- B) Roasting
- C) Smelting
- D) Both A and C
Answer: D) Both A and C
-
What is the purpose of flux in the metallurgical process?
- A) To reduce the melting point of the ore
- B) To remove impurities
- C) To conduct electricity
- D) To increase the density of the ore
Answer: B) To remove impurities
-
Which of the following ores is used for the extraction of copper?
- A) Bauxite
- B) Haematite
- C) Malachite
- D) Chalcopyrite
Answer: D) Chalcopyrite
-
In which of the following processes is a reducing agent used to extract metals from their ores?
- A) Smelting
- B) Electrolysis
- C) Roasting
- D) Calcination
Answer: A) Smelting
-
Which of the following is an example of a non-ferrous metal?
- A) Iron
- B) Zinc
- C) Copper
- D) Both B and C
Answer: D) Both B and C
-
What is the principle of the metallurgical process of electrolysis?
- A) Oxidation at the anode and reduction at the cathode
- B) Reduction at the anode and oxidation at the cathode
- C) Both oxidation and reduction take place at the anode
- D) Both oxidation and reduction take place at the cathode
Answer: A) Oxidation at the anode and reduction at the cathode
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