Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JEE Main 20209 JanuaryMorning Shift

Exam: JEE Main
Year: 2020
Date: 9 January
Shift: Morning Shift
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

JEE Main 2020 · 9 January · Morning Shift · Chemistry · General Principles and Processes of Isolation of Metals

According to the following diagram, A reduces B O _ 2 when the...

According to the following diagram, A reduces

B{O}_{2}

when the temperature is:
According to the following diagram, A reduces B O _ 2 when the temperature is:

According to the following diagram, A reduces B O _ 2 when the temperature is:

Options

A $< {1400}^{o}C$
B $> {1400}^{o}C$
C $> {1200}^{o}C$ but $< {1400}^{o}C$
D $< {1200}^{o}C$

Correct answer

B. $> {1400}^{o}C$

Step-by-step solution

$A + {BO}_{2} \to B + {AO}_{2}$
This reaction will be spontaneous when
$\DeltaG = - ve$

Which we can see from the diagram, is possible only at temperature $> 1400 ° C$

Practice General Principles and Processes of Isolation of Metals on Quantrex Academy →

More from General Principles and Processes of Isolation of Metals

Identify the incorrect pair from the following : JEE Main 2024 The correct statement(s) related to processes involved in the extraction of metals is(are) JEE Advanced 2023 Which one of the following is not an example of calcination? JEE Main 2023 Given below are two statements related to Ellingham diagram : Statement I : Ellingham… JEE Main 2023 Which one of the following is most likely a mismatch? JEE Main 2023 Given below are two statements: one is labelled as Assertion A and the other is labelled… JEE Main 2023 Given below are two statements: Statement I: In the metallurgy process,sulphide ore is… JEE Main 2023 In the extraction process of copper, the product obtained after carrying out the… JEE Main 2023 Full General Principles and Processes of Isolation of Metals list All JEE Main PYQs