What is Bayer's process ?

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{C H}_{2} = {C H}_{2} r e a g e n t - --- \to B a y e r s (X)

Q. What is parthenocarpy? Which phytohormone(s) can help in this process?

When water is heated to a temperature X, it gets converted into steam at temperature X by a process called R. And when steam at temperature X is cooled, it reconverted into the water at the same temperature X by a process called S.

(a) How much is the value of X in Kelvin?

(b) What is the process R called?

(d) What is process S known as?

(e) What is the name of energy released during the process S known as?

Q. In aluminium extraction by the Bayer process, alumina is extracted from bauxite by sodium hydroxide at high temperatures and pressures.

{A l}_{2} O_{3} (s) + 2 O H^{-} (a q) \to 2 A l O_{2}^{-} (a q) + H_{2} O (l)

Solid impurities such as

{F e}_{2} O_{3}

and

S i O_{2}

are removed and then

A l {(O H)}_{4}^{-}

is reprecipitated

2 A l {(O H)}_{4}^{-} ⟶ {A l}_{2} O_{3} \cdot 3 H_{2} O (s) + 2 O H_{(a q)}^{-}

.
In the industrial world __________.

Q. Match List I with List II and select the correct answer using the codes given below the list : -

\begin{matrix} List - I & List - II (Metals) & (Extraction Process) (a) A u & (1) Self reduction (b) A l & (2) Liquation (c) P b & (3) Electrolysis (d) S n & (4) Bayer process \end{matrix}

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