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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud is ________
Pb, Sb, Se,...
JEE Main Chemistry Hard
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Q JEE Main 2021
The locus of a point, which moves such that the sum of squares of its distances from the points $(0,0),(1,0)$, $(0,1)(1,1)$ is 18 units, is...
JEE Main Mathematics Easy
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Q JEE MAIN 2021
If $S=\left\{z \in \mathbb{C}: \frac{z-i}{z+2 i} \in \mathbb{R}\right\}$, then:
JEE Main Mathematics Medium
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Q JEE Main 2021
The area of the region $S=\left\{(x, y): 3 x^2 \leq 4 y \leq 6 x+24\right\}$ is $\_\_\_\_$ .
JEE Main Mathematics Medium
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Q JEE MAIN 2021
The empirical formula for a compound with a cubic close packed arrangement of anions and with cations occupying all the octahedral sites in AxB. The...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The distance of the point (1, –2, 3) from the plane x – y + z = 5 measured parallel to a line, whose direction...
JEE Main Mathematics Medium
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Q JEE Main 2021
A wire of length 36 m is cut into two pieces, one of the pieces is bent to form a square and the other is...
JEE Main Mathematics Easy
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Q JEE MAIN 2021
If the matrix $A=\left[\begin{array}{cc}0 & 2 \\ k & -1\end{array}\right]$ satisfies $A\left(A^3+3 I\right)=2 I$, then the value of $K$ is :
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Potassium permanganate on heating at 513 K gives a product which is
JEE Main Chemistry Easy
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Q JEE Main 2021
If ${ }^1 \mathrm{P}_1+2 \cdot{ }^2 \mathrm{P}_2+3 \cdot{ }^3 \mathrm{P}_3+\ldots+15 \cdot{ }^{15} \mathrm{P}_{15}={ }^9 \mathrm{P}_{\mathrm{r}}-\mathrm{s}, 0 \leq \mathrm{s} \leq 1$, then ${ }^{\mathrm{q}+\mathrm{s}} \mathrm{C}_{\mathrm{r}-\mathrm{s}}$ is...
JEE Main Mathematics Medium
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