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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
If enthalpy of atomisation for $\mathrm{Br}_{2(I)}$ is $\times \mathrm{kJ} / \mathrm{mol}$ and bond enthalpy for $\mathrm{Br}_2$ is $\mathrm{y} \mathrm{kJ} / \mathrm{mol}$, the relation between them
JEE Main Chemistry Easy
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Q JEE-MAIN 2020
If for some $\alpha \in \mathrm{R}$, the lines $L_1: \frac{x+1}{2}=\frac{y-2}{-1}=\frac{z-1}{1}$ and $\mathrm{L}_2: \frac{\mathrm{x}+2}{\alpha}=\frac{\mathrm{y}+1}{5-\alpha}=\frac{\mathrm{z}+1}{1}$ are coplanar, then the line $L_2$ passes through the point :
JEE Main Mathematics Easy
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Q JEE MAIN 2020
Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in...
JEE Main Chemistry Easy
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Q JEE MAIN 2020
$[\mathrm{Pd}(\mathrm{F})(\mathrm{Cl})(\mathrm{Br})(\mathrm{I})]^{2-}$ has n number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilisation energy [CFSE] of $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{\mathrm{n}}{ }^{-6}$, respectively, are [Note :...
JEE Main Chemistry Medium
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Q JEE-MAIN 2020
If $x=1$ is a critical point of the function $f(x)=\left(3 x^2+a x-2-a\right) e^x$, then :
JEE Main Mathematics Easy
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Q JEE MAIN 2020
In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a molecule varies with T as
JEE Main Physics Medium
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Q JEE MAIN 2020
What would be the electrode potential for the given half cell reaction at $\mathrm{pH}=5$ ? $\_\_\_\_$ . $...
JEE Main Chemistry Medium
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Q JEE MAIN 2020
Shown in the figure is a hollow icecream cone (it open at the top). If its mass is M, radius of its top, R and...
JEE Main Physics Medium
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Q JEE MAIN 2020
An object of mass m is suspended at the end of a massless wire of length L and area of cross-section, A. Young modulus of...
JEE Main Physics Easy
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Q JEE-MAIN 2020
There are 3 sections in a question paper and each section contains 5 questions. A candidate has to answer a total of 5 questions, choosing...
JEE Main Mathematics Easy
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