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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
If the equilibrium constant for $\mathrm{A} \rightleftharpoons \mathrm{B}+\mathrm{Cis}_{\mathrm{eq}}^{(1)}$ and that of $\mathrm{B}+\mathrm{C} \rightleftharpoons \mathrm{P}$ is $\mathrm{K}_{\mathrm{eq}}^{(2)}$, the equilibrium constant for $\mathrm{A} \rightleftharpoons \mathrm{P}$ is
JEE Main Chemistry Easy
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Q JEE MAIN 2020
Which of the following reactions will not produce a racemic product?
JEE Main Chemistry Easy
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Q JEE MAIN 2020
In the following reaction sequence, [C] is
JEE Main Chemistry Medium
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Q JEE MAIN 2020
Let $S$ be the set of points where the function, $f(x)=|2-|x-3| \|, x \in R$, is not differentiable. Then $\sum_{x \in S} f(f(x))$ is equal...
JEE Main Mathematics Medium
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Q JEE MAIN 2020
The correct order of the spin-only magnetic moments of the following complexes is :
(I) $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Br}_2$
(II) $\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]$
(III) $\mathrm{Na}_3\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]\left(\Delta_0>\mathrm{P}\right)$
(IV) $...
JEE Main Chemistry Easy
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Q JEE MAIN 2020
In the line spectra of hydrogen atom, difference between the largest and the shortest wavelengths of the Lyman series is 304 Å. The corresponding difference...
JEE Main Physics Hard
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Q JEE MAIN 2020
If the sum of the coefficients of all even powers of x in the product
$\left(1+x+x^2+\ldots \ldots+x^{2 n}\right)\left(1-x+x^2-x^3+\ldots .+x^{2 n}\right)$
Is 61, then...
JEE Main Mathematics Medium
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Q JEE MAIN 2020
The Crystal Field Stabilization Energy $(\mathrm{CFSE})$ of $\left[\mathrm{CoF}_3\left(\mathrm{H}_2 \mathrm{O}\right)_3\right]\left(\Delta_0<\mathrm{P}\right)$ is
JEE Main Chemistry Easy
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Q JEE MAIN 2020
If the variance of the first n natural numbers is 10 and the variance of the first m even natural numbers is 16, then m...
JEE Main Mathematics Medium
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Q JEE MAIN 2020
A circular disc of mass $M$ and radius $R$ is rotating about its axis with angular speed $\omega_1$. If another stationary disc having radius $\frac{R}{2}$...
JEE Main Physics Hard
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