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QJEE MAIN 2022
A $\xrightarrow[\substack{\text { (ii) } \mathrm{CN}^{-} \\ \text {(ii) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}}]{\text {(i) } \mathrm{Cl}_2 \Delta} 4$-Bromophenyl acetic acid. In the above...
JEE MainChemistryEasy
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QJEE MAIN 2022
Three masses M = 100 kg, m1 = 10 kg and m2 = 20 kg are arranged in a system as shown in figure. All...
JEE MainPhysicsMedium
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QJEE MAIN 2022
Given $\pi a^2-\pi a b=30 \pi$ and $\pi a b-\pi b^2=18 \pi$ on subtracting, we get $(a-b)^2=a^2-2 a b+b^2=12$ Let $f$ and $g$ be twice...
JEE MainMathematicsEasy
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QJEE MAIN 2022
Let $A=\left(\begin{array}{cc}1+i & 1 \\ -i & 0\end{array}\right)$ where $i=\sqrt{-1}$. Then, the number of elements in the set $\left\{n \in\{1,2, \ldots, 100\}: A^n=A\right\}$ is
JEE MainMathematicsMedium
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QJEE MAIN 2022
A torque meter is calibrated to reference standards of mass, length and time each with 5% accuracy. After calibration, the measured torque with this torque...
JEE MainPhysicsMedium
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QJEE MAIN 2022
A solid cylinder and a solid sphere, having same mass M and radius R, roll down the same inclined plane from top without slipping. They...
JEE MainPhysicsEasy
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QJEE MAIN 2022
If the system of linear equations $2 x-3 y=\gamma+5, \alpha x+5 y=\beta+1$ where $\alpha, \beta, \gamma \in \mathbf{R}$ has infinitely many solutions, then the value...
JEE MainMathematicsEasy
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QJEE MAIN 2022
For real numbers a, b (a > b > 0), let
JEE MainMathematicsMedium
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QJEE MAIN 2022
Aqueous solution of which of the following boron compounds will be strongly basic in nature?
JEE MainChemistryEasy
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QJEE MAIN 2022
The major product (P) of the given reaction is (where, Me is – $\left.\mathrm{CH}_3\right)$
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