Chemistry · 2025
JEE Main · 23 January 2025, Shift 2 · Q71
When 81.0 g of aluminium is allowed to react with 128.0 g of oxygen gas, the mass of aluminium oxide produced in grams is ____. (Nearest integer)…
When $\displaystyle 81.0$ g of aluminium is allowed to react with $\displaystyle 128.0$ g of oxygen gas, the mass of aluminium oxide produced in grams is $\displaystyle \_\_\_\_$. (Nearest integer)
Given :
Molar mass of Al is $\displaystyle 27.0 \mathrm{~g} \mathrm{~mol}^{-1}$
Molar mass of O is $\displaystyle 16.0 \mathrm{~g} \mathrm{~mol}^{-1}$
Official answer
From NTA’s final answer key for this paper.
153
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.