Search any question & find its solution
Question:
Answered & Verified by Expert
Assertion : Extraction of iron metal from iron oxide ore is carried out by heating with coke.
Reason : The reaction $\mathrm{Fe}_2 \mathrm{O}_{3(s)} \rightarrow \mathrm{Fe}_{(s)}+3 / 2 \mathrm{O}_{2(\mathrm{~g})}$ is a spontaneous process.
Options:
Reason : The reaction $\mathrm{Fe}_2 \mathrm{O}_{3(s)} \rightarrow \mathrm{Fe}_{(s)}+3 / 2 \mathrm{O}_{2(\mathrm{~g})}$ is a spontaneous process.
Solution:
2114 Upvotes
Verified Answer
The correct answer is:
If both assertion and reason are false.
Extraction of iron metal from iron oxide ore is carried out by heating with coke and flux (calcium carbonate). Flux is a slag forming substance. It converts infusible impurities into fusible slag.
The reaction : $\mathrm{Fe}_2 \mathrm{O}_{3(s)} \rightarrow \mathrm{Fe}_{(s)}+3 / 2 \mathrm{O}_{2(\mathrm{~g})}$ is not a spontaneous process. $\mathrm{Fe}_2 \mathrm{O}_3$ is converted to $\mathrm{FeO}$ at about $400^{\circ} \mathrm{C} . \mathrm{FeO}$ is converted to $\mathrm{Fe}$ at about $800^{\circ} \mathrm{C}-1000^{\circ} \mathrm{C}$
The reaction : $\mathrm{Fe}_2 \mathrm{O}_{3(s)} \rightarrow \mathrm{Fe}_{(s)}+3 / 2 \mathrm{O}_{2(\mathrm{~g})}$ is not a spontaneous process. $\mathrm{Fe}_2 \mathrm{O}_3$ is converted to $\mathrm{FeO}$ at about $400^{\circ} \mathrm{C} . \mathrm{FeO}$ is converted to $\mathrm{Fe}$ at about $800^{\circ} \mathrm{C}-1000^{\circ} \mathrm{C}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.