MCQ
The purification of alumina is called
  • A
    Bosch process
  • B
    Caster process
  • Baeyer's process
  • D
    Hoop's process

Answer

Correct option: C.
Baeyer's process
c
(c) The purification of alumina can be done by Baeyer’s process.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The standard Gibbs energy change at $300\, K$ for the reaction $2A \rightleftharpoons  B+C$ is $2494.2\,J.$ At a given time, the composition of the reaction mixture is $[A] = \frac{1}{2}, [B] = 2$ and $[C] = \frac{1}{2} .$ The reaction proceeds in the : $[R = 8.314 \,J/K/mol, e= 2.718]$
Number of $sp$ hybridised carbon atom in the given compound is $C{H_2} = CH-C \equiv C-C{H_2}-CN$
CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) H2O(l)
Consider the above reaction, what mass of CaCl2 will be formed if 250 mL of 0.76 M HCl reacts with 1000 g of CaCO3?
(Given: Molar mass of Ca, C, O, H and Cl are 40, 12, 16, 1 and 35.5 g mol-1, respectively)
In allene $\left( C _3 H _4\right)$, the type$(s)$ of hybridisation of the carbon atoms is (are):
If the solubility product of $BaS{O_4}$ is $1.5 \times {10^{ - 9}} $ in water, its solubility in moles per litre, is
Given below are two statements :

Statement $I$ : The rate law for the reaction $A+B \rightarrow C$ is rate $(r)=k[A]^2[B]$. When the concentration of both $\mathrm{A}$ and $\mathrm{B}$ is doubled, the reaction rate is increased " $\mathrm{x}$ " times.

Statement $II$ :

(Image)

The figure is showing "the variation in concentration against time plot" for a $"y"$ order reaction. The value of $x+y$ is . . . . . . 

In the preparation of sulphuric acid, ${V_2}{O_5}$ is used in the reaction, which is
Number of chiral carbons in $\beta - D - ( + )$ - glucose is
A colourless water soluble organic liquid decomposes sodium carbonate and liberates carbon dioxide. It produces black precipitate with Tollen's reagent. The liquid is
Consider the imaginary equilibrium $4A + 5B$ $\rightleftharpoons$ $ 4X + 6Y$ The equilibrium constant ${K_c}$ has the unit