Given below are two statements. Statement I: The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of $\Delta G$ vs temperature. Statement II: The value of $\Delta G$ increases from left to right in Ellingham diagram. In the light of the above statements, choose the most appropriate answer from the options given below:

(C) Statement I is true but Statement II is false

(A) Both Statement I and Statement II are false

(B) Statement I is false but Statement II is true

(D) Both Statement I and Statement II are true

JEE Main · 2021 · 26 Aug 2021 · Shift 1 · General Principles and Processes of Isolation of Metals

Given below are two statements.
Statement I: The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of

Δ G

vs temperature.
Statement II: The value of

Δ G

increases from left to right in Ellingham diagram.
In the light of the above statements, choose the most appropriate answer from the options given below:

(A)Both Statement I and Statement II are false
(B)Statement I is false but Statement II is true
(C)Statement I is true but Statement II is false✓ Correct
(D)Both Statement I and Statement II are true

Answer: (C)

Solution

Statement I is true: Ellingham diagrams plot

Δ G^{\circ}

vs temperature and are used to select reducing agents for metal extraction. Statement II is false: in Ellingham diagrams,

Δ G

is plotted on the vertical axis (not left-to-right), and the statement about "increases from left to right" is meaningless in this context. Answer: (C).

JEE Main · 2021 · 26 Aug 2021 · Shift 1 · Single correct option

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JEE Main · 2021 · 26 Aug 2021 · Shift 1 · General Principles and Processes of Isolation of Metals

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