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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN_2021_
If $\int \frac{2 e^x+3 e^{-x}}{4 e^x+7 e^{-x}} d x=\frac{1}{14}\left(u x+v \log _e\left(4 e^x+7 e^{-x}\right)\right)+C$, where $C$ is a constant of integration, then $u+v$ is equal...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Match List-I with List-II
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The oxide that gives $\mathrm{H}_2 \mathrm{O}_2$ most readily on treatment with $\mathrm{H}_2 \mathrm{O}$ is
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The conversion of hydroxyapatite occurs due to presence of F– ions in water. The correct formula of hydroxyapatite is:
JEE Main Chemistry Easy
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Q JEE Main 2021
Let $A$ and $B$ be independent events such that $P(A)=p, P(B)=2 p$. The largest value of $p$, for which $P$ (exactly one of $A, B$...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Which one of the following chemicals is responsible for the production of HCl in the stomach leading to irritation and pain?
JEE Main Chemistry Easy
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Q JEE Main 2021
Let $y=y(x)$ be a solution curve of the differential equation $(y+1) \tan ^2 x d x+\tan x d y+y d x=0, x \in\left(0, \frac{\pi}{2}\right)$. If...
JEE Main Mathematics Hard
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Q JEE MAIN 2021
The compound/s which will show significant intermolecular H–bonding is/are
JEE Main Chemistry Easy
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Q JEE Main 2021
On the ellipse $\frac{x^2}{8}+\frac{y^2}{4}=1$ let $P$ be a point in the second quadrant such that the tangent at $P$ to the ellipse is perpendicular to...
JEE Main Mathematics Medium
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Q JEE Main 2021
The mean and standard deviation of 20 observations were calculated as 10 and 2.5 respectively. It was found that by mistake one data value was...
JEE Main Mathematics Medium
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