Easy MCQ +4 / -1 PYQ · JEE Mains 2021

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 $\Delta$S 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 :

  1. A Both Statement I and Statement II are true
  2. B Statement I is false but Statement II is true
  3. C Both Statement I and Statement II are false
  4. D Statement I is true but Statement II is false Correct answer

Solution

Given Statement I is true as in a number of processes, one element is used to reduce the oxide of another metal. Any element will reduce the oxide of other metal which lie above it in the Ellingham diagram because the free energy change will become more negative.<br><br>Given Statement II is false as the value of $\Delta$S is decreases from left to right in Ellingham diagram.

About this question

Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family

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