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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
A resistor dissipates 192 J of energy in 1 s when a current of 4A is passed through it. Now, when the current is doubled,...
JEE Main Physics Easy
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Q JEE MAIN 2021
Let $a_1, a_2 \ldots \ldots a_{10}$ be an AP with common difference -3 and $b_1, b_2 \ldots \ldots, b_{10}$ be a GP with common ratio...
JEE Main Mathematics Easy
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Q JEE MAIN 2021
The major product formed in the following reaction is :
JEE Main Physics Medium
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Q JEE MAIN 2021
If the projection of the vector $\hat{i}+2 \hat{j}+\hat{k}$ on the sum of the two vectors $2 \hat{i}+4 \hat{j}-5 \hat{k}$ and $-\lambda \hat{i}+2 \hat{j}+3 \hat{k}$ is...
JEE Main Mathematics Easy
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Q JEE MAIN 2021
Cross-section view of a prism is the equilateral triangle $A B C$ in the figure. The minimum deviation is observed using this prism when the...
JEE Main Physics Medium
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Q JEE MAIN 2021
The addition of dilute NaOH to $\mathrm{Cr}^{3+}$ salt solution will give :
JEE Main Chemistry Easy
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Q JEE MAIN_2021_
For the cell $$ \mathrm{Cu}(\mathrm{~s})\left|\mathrm{Cu}^{2+}(\mathrm{aq})(0.1 \mathrm{M}) \| \mathrm{Ag}^{+}(\mathrm{aq})(0.01 \mathrm{M})\right| \mathrm{Ag}(\mathrm{~s}) $$ the cell potential $\mathrm{E}_1=0.3095 \mathrm{~V}$ For the cell $$ \mathrm{Cu}(\mathrm{~s})\left|\mathrm{Cu}^{2+}(\mathrm{aq})(0.01 \mathrm{M}) \| \mathrm{Ag}^{+}(\mathrm{aq})(0.001 \mathrm{M})\right|...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Let $a$ and $b$ respectively be the points of local maximum and local minimum of the function $f(x)=2 x^3-3 x^2- 12 x$. If $A$ is...
JEE Main Mathematics Medium
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Q JEE MAIN_2021_
For the first order reaction $A \rightarrow 2 B, 1$ mole of reactlant $A$ gives 0.2 moles of $B$ after 100 minutes. The half life...
JEE Main Chemistry Medium
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Q JEE MAIN 2021
The sum of all 3-digit numbers less than or equal to 500, that are formed without using the digit "1" and they all are multiple...
JEE Main Mathematics Medium
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