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QJEE MAIN 2019
The major product of the following reaction is
JEE MainChemistryEasy
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QJEE MAIN 2019
A ball is thrown vertically up (taken as + z-axis) from the ground. The correct momentum-height (p-h) diagram is:
JEE MainPhysicsMedium
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QJEE MAIN 2019
Ge and Si diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if Ge diode connection are reversed, the value...
JEE MainPhysicsMedium
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QJEE MAIN 2019
An urn contains 5 red and 2 green balls. A ball is drawn at random from the urn. If the drawn ball is green, then...
JEE MainMathematicsEasy
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QJEE-MAIN 2019
A person standing on an open ground hears the sound of a jet aeroplane, coming from north at an angle 60° with ground level. But...
JEE MainPhysicsEasy
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QJEE MAIN 2019
$\wedge_{\mathrm{m}}^{\circ}$ for $\mathrm{NaCl}, \mathrm{HCl}$ and NaA are $126.4,425.9$ and $100.5 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$, respectively. If the conductivity of 0.001 M HA is $...
JEE MainChemistryMedium
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QJEE MAIN 2019
The area of the region $A=\{(x, y): 0 \leq y \leq x|x|+1$ and $-1 \leq x \leq 1\}$ in sq. units, is
JEE MainMathematicsEasy
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QJEE MAIN 2020
One of the two identical conducting wires of length $L$ is bent in the form of a circular loop and the other one into a...
JEE MainPhysicsMedium
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QJEE MAIN 2019
The major product of the following reaction is
JEE MainChemistryEasy
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QJEE MAIN 2019
A data consists of $n$ observations $x_1, x_2, \ldots ., x n$. If $\sum_{i=1}^n\left(x_i+1\right)^2=9 n$ and $\sum_{i=1}^n\left(x_i-1\right)^2=5 n$, then the standard deviation of this data...
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