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1
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
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-1
Out of Syllabus
Which one of the following set of elements can be detected using sodium fusion extract?
2
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
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Out of Syllabus
The addition of silica during the extraction of copper from its sulphide ore :-
3
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
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-1
Out of Syllabus
The statement is incorrect about Ellingham diagram is
4
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
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Out of Syllabus
Match List I with List II : (Both having metallurgical terms)
Choose the correct answer from the options given below :
| List - I | List - II | ||
|---|---|---|---|
| (a) | Concentration of Ag ore | (i) | Reverberatory furnace |
| (b) | Blast furnace | (ii) | Pig iron |
| (c) | Blister copper | (iii) | Leaching with dilute NaCN solution |
| (d) | Froth floatation method | (iv) | Sulfide ores |
Choose the correct answer from the options given below :
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