In Class 12 Boards there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 12 Chemistry Chapter 6 General Principles and Process of Isolation of Elements Case Study and Passage-Based Questions with Answers were Prepared Based on the Latest Exam Pattern. Students can solve NCERT Class 12 Chemistry Case Study Questions General Principles and Process of Isolation of Elements to know their preparation level.
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In CBSE Class 12 Chemistry Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
General Principles and Process of Isolation of Elements Case Study Questions With Answers
Here, we have provided case-based/passage-based questions for Class 12 Chemistry Chapter 6 General Principles and Process of Isolation of Elements
Case Study/Passage-Based Questions
Case Study 1: General Principles and Process of Isolation of Elements, explores the principles behind the extraction of metals from their natural sources. The chapter outlines the sequential steps involved in the extraction process, starting from the concentration of ores, then conversion of ores into oxides, reduction of these oxides to obtain crude metal, and finally refining of the crude metal. Important processes like hydraulic washing, magnetic separation, froth flotation, leaching, and calcination are described. The chapter also delves into the principles of electrochemical series and the thermodynamics and electrochemistry of metal extraction. The extraction of metals at the top of the activity series and the bottom of the activity series are covered in detail.
What is the first step in the extraction of metals from their ores?
A) Conversion of ores into oxides
B) Reduction of oxides to obtain crude metal
C) Refining of the crude metal
D) Concentration of ores
Answer: D) Concentration of ores
Which method is often used for removing gangue from sulphide ores?
A) Hydraulic washing
B) Magnetic separation
C) Froth flotation
D) Calcination
Answer:C) Froth flotation
What is the purpose of calcination?
A) To convert ores into their oxides
B) To concentrate the ores
C) To obtain crude metal from oxides
D) To refine the crude metal
Answer:A) To convert ores into their oxides
How are metals at the top of the activity series typically extracted?
A) By electrolysis
B) By reduction with carbon
C) By reduction with hydrogen
D) By displacement with more reactive metals
Answer:A) By electrolysis
What does the electrochemical series help to predict in the extraction of metals?
A) The concentration method required for the ore
B) The feasibility of the extraction of a metal from its ore
C) The refining method for the crude metal
D) The type of ore the metal is found in
Answer:B) The feasibility of the extraction of a metal from its ore
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