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1
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
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-1
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Gibbs energy vs T plot for the formation of oxides is given below.

JEE Main 2023 (Online) 10th April Evening Shift Chemistry - Isolation of Elements Question 5 English

For the given diagram, the correct statement is -

A
At $$600^{\circ} \mathrm{C}, \mathrm{C}$$ can reduce $$\mathrm{FeO}$$
B
At $$600{ }^{\circ} \mathrm{C}, \mathrm{C}$$ can reduce $$\mathrm{ZnO}$$
C
At $$600^{\circ} \mathrm{C}, \mathrm{CO}$$ can reduce $$\mathrm{ZnO}$$
D
At $$600{ }^{\circ} \mathrm{C}, \mathrm{CO}$$ cannot reduce $$\mathrm{FeO}$$
2
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which of the following is used as a stabilizer during the concentration of sulphide ores?

A
Cresols
B
Xanthates
C
Fatty acids
D
Pine oils
3
JEE Main 2023 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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In Hall - Heroult process, the following is used for reducing $$\mathrm{Al}_{2} \mathrm{O}_{3}$$ :-

A
Magnesium
B
$$\mathrm{CaF}_{2}$$
C
Graphite
D
$$\mathrm{Na}_{3} \mathrm{AlF}_{6}$$
4
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Which of the following metals can be extracted through alkali leaching technique?

A
$$\mathrm{Sn}$$
B
Cu
C
$$\mathrm{Au}$$
D
$$\mathrm{Pb}$$
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