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QJEE MAIN 2025
The type of oxide formed by the element among $\mathrm{Li}, \mathrm{Na}, \mathrm{Be}, \mathrm{Mg}, \mathrm{B}$ and Al that has the least atomic radius is :
JEE MainChemistryEasy
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QJEE MAIN 2025
Which among the following halides will generate the most stable carbocation in the nucleophilic substitution reaction?
JEE MainChemistryMedium
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QJEE MAIN 2025
Given below are two statements : Statement (I) : On nitration of m-xylene with $\mathrm{HNO}_{3}, \mathrm{H}_{2} \mathrm{SO}_{4}$ followed by oxidation, 4-nitrobenzene-1,3dicarboxylic acid is obtained as...
JEE MainChemistryEasy
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QJEE MAIN 2025
The magnetic field inside a 200 turns solenoid of radius 10 cm is $2.9 \times 10^{-4} \mathrm{Tesla}$. If the solenoid carries a current of 0.29...
JEE MainPhysicsEasy
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QJEE MAIN 2025
Two planets, A and B are orbiting a common star in circular orbits of radii $R_{A}$ and $R_{B}$, respectively, with $R_{B}=2 R_{A}$. The planet $B$...
JEE MainPhysicsMedium
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QJEE MAIN 2025
Two cars $P$ and $Q$ are moving on a road in the same direction. Acceleration of car $P$ increases linearly with time whereas car $Q$...
JEE MainPhysicsMedium
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QJEE MAIN 2025
A physical quantity $Q$ is related to four observables $\mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{d}$ as follows : $\mathrm{Q}=\frac{\mathrm{ab}}{} \mathrm{a}^{4}$ where, $...
JEE MainPhysicsMedium
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QJEE MAIN 2025
A parallel plate capacitor consisting of two circular plates of radius 10 cm is being charged by a constant current of 0.15 A . If...
JEE MainPhysicsMedium
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QJEE MAIN 2025
A point charge causes an electric flux of $-2 \times 10^{4} \mathrm{Nm}^{2} \mathrm{C}^{-1}$ to pass through a spherical Gaussian surface of 8.0 cm radius, centred...
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