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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021 S2
The area of the region bounded by $y-x=2$ and $x^2=y$ is equal to :-
JEE Main Mathematics Medium
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Q JEE-MAIN 2021
Two simple harmonic motions are represented by the equations
$x_1=5 \sin \left(2 \pi t+\frac{\pi}{4}\right)$ and $x_2=5 \sqrt{2}(\sin 2 \pi t+\cos 2 \pi t)$
The amplitude...
JEE Main Physics Easy
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Q JEE MAIN 2021
The wavelength of electrons accelerated from rest through a potential difference of 40 kV is $x \times 10^{-12} \mathrm{~m}$. The value of $x$ is $\_\_\_\_$...
JEE Main Chemistry Medium
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Q JEE MAIN 2021
Statement-I : By doping silicon semiconductor with pentavalent material, the electrons density increases.
Statement-II : The n-type semiconductor has net negative charge.
In...
JEE Main Physics Easy
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Q JEE-MAIN 2021
A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of $50 \mathrm{rad} \mathrm{s}^{-1}$ in...
JEE Main Physics Easy
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Q JEE MAIN 2021
The water having more dissolved O2 is :
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
The acceleration due to gravity is found upto an accuracy of 4% on a planet. The energy supplied to a simple pendulum to known mass...
JEE Main Physics Easy
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Q JEE MAIN 2021
For a given chemical reaction $\mathrm{A} \rightarrow \mathrm{B}$ at 300 K the free energy change is $-49.4 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and the enthalpy of reaction is...
JEE Main Chemistry Medium
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Q JEE MAIN 2021 S2
If $\tan \left(\frac{\pi}{9}\right), x, \tan \left(\frac{7 \pi}{18}\right)$ are in arithmetic progression and $\tan \left(\frac{\pi}{9}\right), y, \tan \left(\frac{5 \pi}{18}\right)$ are also in arithmetic progression, then $...
JEE Main Mathematics Medium
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Q JEE MAIN 2021 S2
A student appeared in an examination consisting of 8 true-false type questions. The student guesses the answers with equal probability. The smallest value of n...
JEE Main Mathematics Medium
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