Question:
What is the product formed when bauxite ore is treated with sodium hydroxide?
What is the product formed when bauxite ore is treated with sodium hydroxide?
Show Hint
Impurities like Fe\(_2\)O\(_3\) remain insoluble during Bayer’s process.
Updated On: Jan 26, 2026
- Sodium meta aluminate
- Aluminium hydroxide
- Sodium aluminate
- Sodium hydrogen carbonate
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Identify the process involved.
Bauxite ore is purified by the Bayer’s process, where it is treated with concentrated sodium hydroxide under high temperature and pressure.
Step 2: Chemical reaction.
Alumina present in bauxite reacts with sodium hydroxide to form soluble sodium meta aluminate: \[ \text{Al}_2\text{O}_3 + 2\text{NaOH} \rightarrow 2\text{NaAlO}_2 + \text{H}_2\text{O} \] Step 3: Conclusion.
Thus, the product formed is sodium meta aluminate.
Bauxite ore is purified by the Bayer’s process, where it is treated with concentrated sodium hydroxide under high temperature and pressure.
Step 2: Chemical reaction.
Alumina present in bauxite reacts with sodium hydroxide to form soluble sodium meta aluminate: \[ \text{Al}_2\text{O}_3 + 2\text{NaOH} \rightarrow 2\text{NaAlO}_2 + \text{H}_2\text{O} \] Step 3: Conclusion.
Thus, the product formed is sodium meta aluminate.
Was this answer helpful?
0
0
Top Questions on Metallurgy
- Match the metals (List-I) with their ores (List-II)\[\begin{array}{|c|c|} \hline \textbf{List-I (Metals)} & \textbf{List-II (Ores)} \\ \hline \text{(A) Mercury (Hg)} & \text{(III) Cinnabar} \\ \hline \text{(B) Lead (Pb)} & \text{(IV) Galena} \\ \hline \text{(C) Manganese (Mn)} & \text{(I) Pyrolusite} \\ \hline \text{(D) Zinc (Zn)} & \text{(II) Calamine} \\ \hline \end{array}\]
- CUET (PG) - 2025
- Chemistry
- Metallurgy
- In an Ellingham-diagram, if the C/C\(_2\)O line lies below the metal oxide line, then the carbon is used to reduce the metal oxide and itself is oxidized to:
- CUET (PG) - 2025
- Chemistry
- Metallurgy
- What are the components of Bronze?
(A) Copper
(B) Silver
(C) Zinc
(D) Tin
(E) Iron
Choose the correct answer from the options given below: - Identify the metals by their sequential order from minimum to maximum malleability.
(A) Tin
(B) Platinum
(C) Zinc
(D) Iron
(E) Nickel
Choose the correct answer from the options given below: - Metals having maximum to minimum resistance to corrosion
(A) Zinc
(B) Aluminum
(C) Copper
(D) Tin
(E) Gold
Choose the correct answer from the options given below:
View More Questions
Questions Asked in MHT CET exam
- If $ f(x) = 2x^2 - 3x + 5 $, find $ f(3) $.
- MHT CET - 2025
- Functions
- Evaluate the definite integral: \( \int_{-2}^{2} |x^2 - x - 2| \, dx \)
- MHT CET - 2025
- Definite Integral
- There are 6 boys and 4 girls. Arrange their seating arrangement on a round table such that 2 boys and 1 girl can't sit together.
- MHT CET - 2025
- permutations and combinations
- Given the equation: \[ 81 \sin^2 x + 81 \cos^2 x = 30 \] Find the value of \( x \).
- MHT CET - 2025
- Trigonometric Identities
- Evaluate the integral: \[ \int \frac{1}{\sin^2 2x \cdot \cos^2 2x} \, dx \]
- MHT CET - 2025
- Trigonometric Identities
View More Questions