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← Bihar Board Class 12 PYQ
General Principles and Processes of Isolation of Elements
Bihar Board Class 12 · Chemistry · 35 past questions
Topic
Occurrence and ores of metals
3
Electrolytic and cyanide extraction
1
Concentration of ores
0
Refining of metals
0
Roasting, calcination and smelting
0
Level
Easy
1
Moderate
2
Year
2026
1
2025
0
2024
3
2023
2
2022
1
2021
4
2019
1
2017
1
2016
2
2015
4
3 of 35 ·
show all
Q7
2024 Set D
Which of the following metals is generally found in free state ?
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Q8
2024 Set D
Which of the following statements is true ?
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Q10
2024 Set D
An ore having two different metal atoms is
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