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Bauxite is concentrated by
Options
(a) magnetic separation
(b) roasting
(c) froth floatation process
(d) chemical method
Correct Answer:
chemical method
Explanation:
Bauxite (Al₂O₃.2H₂O) is concentrated by chemical method. In this method bauxite is well digested with concentration sodium hydroxide which dissolves all the Al₂O₃ component in the ore to form a solution of sodium aluminate leaving behind the impurities.
Related Questions: - In which of the following pairs, both the species are not isostructural ?
- If a mixture of CO and N₂ in equal amount have total 1 atm pressure
- Among the given compounds, one which can be distinguished by AgNO₃ is
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Topics: Surface Chemistry and Isolation of Elements
(88)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In which of the following pairs, both the species are not isostructural ?
- If a mixture of CO and N₂ in equal amount have total 1 atm pressure
- Among the given compounds, one which can be distinguished by AgNO₃ is
- NH₃ is added BF₃ by
- What is the value of electron gain enthalpy of Na+ if IE₁ of Na =5.1 eV ?
Topics: Surface Chemistry and Isolation of Elements (88)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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