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2023 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2023
The volume of hydrogen liberated at STP by treating 2.4 g of magnesium with excess of hydrochloric acid is $\_\_\_\_$ $\times 10^{-2} \mathrm{~L}$. | Given:...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
The observed magnetic moment of the complex $\left[\mathrm{Mn}(\mathrm{NCS})_6\right]^{\mathrm{x}-}$ is 6.06 BM. The numerical value of x is__
JEE Main Chemistry Easy
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Q JEE MAIN 2023
At 298 K , the standard reduction potential for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ electrode is 0.34 V . Given: $\mathrm{K}_{\text {sa }} \mathrm{Cu}(\mathrm{OH})_2=1 \times 10^{-20}$ [JEE...
JEE Main Chemistry Medium
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Q JEE MAIN 2023
The maximum number of lone pairs of electrons on the central atom from the following species is $\_\_\_\_$ $\mathrm{ClO}_3{ }^{-}, \mathrm{XeF}_4, \mathrm{SF}_4$ and $\mathrm{I}_3^{-}$
JEE Main Chemistry Easy
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Q JEE MAIN 2023
The total number of intensive properties from the following is $\_\_\_\_$ Volume, Molar heat capacity, Molarity, $\mathrm{E}^\theta$ cell, Gibbs free energy change, Molar mass, Mole
JEE Main Physics Easy
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Q JEE MAIN 2023
The sum of oxidation state of the metals in $\mathrm{Fe}(\mathrm{CO})_5, \mathrm{VO}^{2+}$ and $\mathrm{WO}_3$ is ______
JEE Main Chemistry Easy
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Q JEE MAIN 2023
If the formula of Borax is $\mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_x(\mathrm{OH})_{4 n} \mathrm{zH}_2 \mathrm{O}$, then $\mathrm{x}+\mathrm{y}+\mathrm{z}=$ $\_\_\_\_$
JEE Main Chemistry Easy
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Q JEE MAIN 2023
$\mathrm{Mg}\left(\mathrm{NO}_3\right)_2 \cdot \mathrm{XH}_2 \mathrm{O}$ and $\mathrm{Ba}\left(\mathrm{NO}_3\right)_2 \cdot \mathrm{YH}_2 \mathrm{O}$, represent formula of the crystalline forms of nitrate salts. Sum of $X$ and $Y$ is $\_\_\_\_$
JEE Main Chemistry Easy
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Q JEE MAIN 2023
If the boiling points of two solvents X and Y (having same molecular weights) are in the ratio 2 : 1 and their enthalpy of...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
See the following chemical reaction:
$\mathrm{Cr}_2 \mathrm{O}_7^{2-}+\mathrm{XH}^{+}+6 \mathrm{Fe}^{2+} \rightarrow \mathrm{YCr}^{3+}+6 \mathrm{Fe}^{3+}+\mathrm{ZH}_2 \mathrm{O}$
JEE Main Chemistry Easy
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