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Which of the following statement(s) is (are) incorrect ? 
  • a)
    In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2
  • b)
    In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of air
  • c)
    The tin is obtained by the carbon reduction of black tin.
  • d)
    None
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statement(s) is (are) incorrect ?a)In Serpeck&r...
Incorrect Statement Explanation:

a) In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2:
This statement is incorrect because in Serpeck's process, bauxite is heated with sodium hydroxide solution under pressure to extract aluminum. Silica is not removed by heating the bauxite to 1800°C with coke in a current of N2.

b) In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of air:
This statement is correct. Roasting of galena (lead sulfide) is done to convert it into lead oxide, and then self-reduction takes place in the same furnace to obtain metallic lead. Different conditions of temperature and air supply are maintained during these processes.

c) The tin is obtained by the carbon reduction of black tin:
This statement is incorrect. Tin is not obtained by the carbon reduction of black tin. Black tin is actually an allotrope of tin, and metallic tin is usually obtained by reducing tin oxide with carbon at high temperatures.
Therefore, the correct answer is option 'D. None'.
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Which of the following statement(s) is (are) incorrect ?a)In Serpeck&r...
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Which of the following statement(s) is (are) incorrect ?a)In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2b)In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of airc)The tin is obtained by the carbon reduction of black tin.d)NoneCorrect answer is option 'D'. Can you explain this answer?
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Which of the following statement(s) is (are) incorrect ?a)In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2b)In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of airc)The tin is obtained by the carbon reduction of black tin.d)NoneCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statement(s) is (are) incorrect ?a)In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2b)In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of airc)The tin is obtained by the carbon reduction of black tin.d)NoneCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement(s) is (are) incorrect ?a)In Serpeck’s process silica is removed by heating the bauxite to 1800°C with coke in a current of N2b)In extraction of lead from galena roasting and self reduction takes place in the same furnace but under different conditions of temperature and supply of airc)The tin is obtained by the carbon reduction of black tin.d)NoneCorrect answer is option 'D'. Can you explain this answer?.
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