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JEE MAIN 2022
27-06-2022 S2
Question
In 3d series, the metal having the highest $\mathrm{M}^{2+} / \mathrm{M}$ standard electrode potential is
Select the correct option:
A
Cr
B
Fe
C
Cu
D
Zn
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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JEE Main
Chemistry
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JEE Main 2024
2024
Between the following two statements :
Statement-I : Let $\overrightarrow{\mathrm{a}}=\hat{\mathrm{i}}+2 \hat{\mathrm{j}}-3 \hat{\mathrm{k}}$ and $\vec{b}=2 \hat{\imath}+\hat{\jmath}-\hat{k}$. Then the vector $\overrightarrow{\mathrm{r}}$...
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The correct nomenclature for the following compound is:
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JEE Main 2024
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Let the range of the function $f(x)=\frac{1}{2+\sin 3 x+\cos 3 x}, x \in \mathrm{IR}$ be $[a, b]$. If $\alpha$ and...
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JEE Main 2024
2024
Two vertices of a triangle ABC are $\mathrm{A}(3,-1)$ and $\mathrm{B}(-2,3)$, and its orthocentre is $\mathrm{P}(1,1)$. If the coordinates of the...
JEE Main
Mathematics
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JEE Main 2024
2024
Let the foci of a hyperbola H coincide with the foci of the ellipse $E: \frac{(x-1)^2}{100}+\frac{(y-1)^2}{75}=1$ and the eccentricity of...
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Q
JEE Main 2024
2024
The area (in square units) of the region enclosed by the ellipse $x^2+3 y^2=18$ in the first quadrant below the...
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JEE-Main 2024
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Identify the major product in the following reaction.
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JEE-Main 2024
2024
While preparing crystals of Mohr's salt, dil. $\mathrm{H}_2 \mathrm{SO}_4$ is added to a mixture of ferrous sulphate and ammonium sulphate,...
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Q
JEE-Main 2024
2024
Match List - I with List - II.
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Q
JEE Main 2024
2024
Let z be a complex number such that the real part of $\frac{z-2 i}{z+2 i}$ is zero. Then, the maximum...
JEE Main
Mathematics
Easy
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JEE Main 2024
2024
Let $\int_0^x \sqrt{1-\left(y^{\prime}(t)\right)^2} \mathrm{dt}=\int_0^{\mathrm{x}} \mathrm{y}(\mathrm{t}) \mathrm{dt}, 0 \leq \mathrm{x} \leq 3, \mathrm{y} \geq 0, y(0)=0$. Then at $x=2, y^{\prime \prime}+y+1$...
JEE Main
Mathematics
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JEE Main 2024
2024
Consider the line L passing through the points $(1,2,3)$ and $(2,3,5)$. The distance of the point $\left(\frac{11}{3}, \frac{11}{3}, \frac{19}{3}\right)$ from...
JEE Main
Mathematics
Easy
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JEE Main 2024
2024
$\operatorname{Lim}_{x \rightarrow 0} \frac{e-(1+2 x)^{\frac{1}{2 x}}}{x}$ is equal to :
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Mathematics
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JEE Main 2024
2024
When $\Delta \mathrm{H}_{\text {vap }}=30 \mathrm{~kJ} / \mathrm{mol}$ and $\Delta \mathrm{S}_{\text {vap }}=75 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$, then the temperature of...
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JEE Main 2024
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Total number of electron present in $\left(\pi^*\right)$ molecular orbitals of $\mathrm{O}_2, \mathrm{O}_2^{+}$and $\mathrm{O}_2^{-}$is $\_\_\_\_$ .
JEE Main
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JEE Main 2024
2024
Number of compounds from the following which cannot undergo Friedel-Crafts reactions is :____ toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, m-nitroaniline,...
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JEE Main 2024
2024
Based on Heisenberg's uncertainty principle, the uncertainty in the velocity of the electron to be found within an atomic nucleus...
JEE Main
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JEE Main 2024
2024
Consider the following first order gas phase reaction at constant temperature
$ \mathrm{A}(\mathrm{~g}) \rightarrow 2 \mathrm{~B}(\mathrm{~g})+\mathrm{C}(\mathrm{~g}) $
If...
JEE Main
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