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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q _JEE MAIN_2021
Let $\mathrm{g}: \mathrm{N} \rightarrow \mathrm{N}$ be defined as $$ \begin{aligned} & g(3 n+1)=3 n+2 \\ & g(3 n+2)=3 n+3 \\ & g(3 n+3)=3 n+1, \text...
JEE Main Mathematics Medium
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Q JEE MAIN 2021 S2
Consider a circle $C$ which touches the $y$-axis at $(0,6)$ and cuts off an intercept $6 \sqrt{5}$ on the $x$-axis. Then the radius of the...
JEE Main Mathematics Easy
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Q JEE MAIN 2021
The number of sigma bonds in is ................
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm. The radius of an equivalent soap bubble...
JEE Main Physics Easy
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Q JEE MAIN 2021
An aqueous solution of $\mathrm{NiCl}_2$ was heated with excess sodium cyanide in presence of strong oxidizing agent to form $\left[\mathrm{Ni}(\mathrm{CN})_6\right]^{2-}$. The total change in number...
JEE Main Chemistry Easy
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Q JEE MAIN_2021_
The sum of all values of $x$ in $[0,2 \pi]$, for which $\sin x+\sin 2 x+\sin 3 x+\sin 4 x=0$, is equal to:
JEE Main Mathematics Medium
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Q JEE MAIN 2021
An organic compound ' A ' $\mathrm{C}_4 \mathrm{H}_8$ on treatment with $\mathrm{KMnO}_4 / \mathrm{H}^{+}$yields compound ${ }^{\prime} \mathrm{B}^{\prime} \mathrm{C}_3 \mathrm{H}_6 \mathrm{O}$. Compound ' A '...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Diamond has a three dimensional structure of C atoms formed by covalent bonds. The structure of diamond has face centred cubic lattice where 50% of...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Which of the following compounds does not exhibit resonance?
JEE Main Chemistry Easy
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Q JEE MAIN_2021_
The area (in sq. units) of the region, given by the set $...
JEE Main Mathematics Medium
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