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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
Concentration of ores
1
Electrolytic and cyanide extraction
1
Refining of metals
1
Occurrence and ores of metals
0
Roasting, calcination and smelting
0
Level
Easy
3
Moderate
0
Year
2026
3
2025
3
2024
2
2023
4
2022
4
2021
5
2019
3
2017
2
2016
2
2015
5
3 of 35 ·
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Q4
2025 Set D
Impurities present in an ore are called
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Q5
2025 Set D
The process of purification of metal represented by the following equation is called…
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Q6
2025 Set D
Which of the following metals is not obtained by electrolysis ?
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