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← JEE Advanced PYQ
Some Basic Concepts of Chemistry
JEE Advanced · Chemistry · 9 past questions
Topic
Atomic and molar mass
1
Laws of chemical combination
0
Mole concept and Avogadro number
0
Significant figures and measurement
0
Stoichiometry and limiting reagent
0
Level
Easy
1
Moderate
0
Year
2022
1
2021
2
2020
1
2018
1
2014
1
2010
2
2009
1
1 of 9 ·
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Q9
2009 Paper 1
Given that the abundances of isotopes $^{54}$Fe, $^{56}$Fe and $^{57}$Fe are 5%, 90% and 5%, respectively…
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