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QJEE MAIN 2020
The area of the region, enclosed by the circle $x^2+ y^2=2$ which is not common to the region bounded by the parabola $y^2=x$ and the...
JEE MainChemistryMedium
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QJEE-MAIN 2020
A calorimeter of water equivalent 20 g contains 180 g of water at $25^{\circ} \mathrm{C}$. ' m ' grams of steam at $100^{\circ} \mathrm{C}$ is...
JEE MainPhysicsEasy
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QJEE MAIN 2020
Among the compounds $A$ and $B$ with molecular formula $\mathrm{C}_9 \mathrm{H}_{18} \mathrm{O}_3, A$ is having higher boiling point the $B$. The possible structures of $A$...
JEE MainChemistryEasy
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QJEE-MAIN 2020
A uniform magnetic field $B$ exists in a direction perpendicular to the plane of a square loop made of a metal wire. The wire has...
JEE MainPhysicsEasy
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QJEE MAIN 2020
For a uniform rectangular sheet shown in the figure, the ratio of moments of inertia about the axes perpendicular to the sheet and passing through...
JEE MainPhysicsEasy
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QJEE MAIN 2020
A ball is dropped from the to of a 100 m high tower on a planet. In the last $\frac{1}{2} \mathrm{~s}$ before hitting the ground,...
JEE MainPhysicsMedium
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QJEE MAIN 2020
The greatest positive integer k , for which $49^{\mathrm{k}}+1$ is a factor of the sum
$49^{125}+49^{124}+\ldots \ldots+49^2+49+1$, is
JEE MainMathematicsMedium
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QJEE MAIN 2020
Two resistors $400 \Omega$ and $800 \Omega$ are connected in series across a 6 V battery. The potential difference measured by a voltmeter of $...
JEE MainPhysicsEasy
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QJEE MAIN 2020
An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by a constant electric field E. The rate of change...
JEE MainPhysicsEasy
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QJEE MAIN 2020
The logical statement $(p \Rightarrow q) \wedge(q \Rightarrow \sim p)$ is equivalent to
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