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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

NTA Abhyas 2020 · Chemistry · General Principles and Processes of Isolation of Metals

During the formation of the slag by the reaction of flux and...

During the formation of the slag by the reaction of flux and impurities which of the following is an example of acidic and basic flux?

(i)

FeO + Si{O}_{2} \to FeSi{O}_{3}

(ii)

Si{O}_{2} + MgO \to MgSi{O}_{3}

Options

A(i) $Si{O}_{2}$ -Acidic flux (ii) MgO-Basic flux
B(i) $Si{O}_{2}$ -Basic flux (ii) MgO-Acidic flux
C(i) $Si{O}_{2}$ -Basic flux (ii) MgO-Basic flux
D(i) $Si{O}_{2}$ -Acidic flux (ii) MgO-Acidic flux

Correct answer

A. (i) $Si{O}_{2}$ -Acidic flux (ii) MgO-Basic flux

Step-by-step solution

(i)

\mathop{FeO}_{\mathop{basic}_{impurity}} + \mathop{Si{O}_{2}}_{\mathop{acidic}_{flux}} \to \mathop{FeSi{O}_{3}}_{slag}

(ii)

\mathop{Si{O}_{2}}_{\mathop{acidic}_{impurity}} + \mathop{MgO}_{\mathop{basic}_{flux}} \to \mathop{MgSi{O}_{3}}_{slag}

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