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2023 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2023
The water quality of a pond was analysed and its BOD was found to be 4. The pond has
JEE Main Chemistry Easy
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Q JEE MAIN 2023
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : $\alpha$-halocarboxylic acid on...
JEE Main Chemistry Hard
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Q JEE MAIN 2023
A chloride salt solution acidified with dil. $\mathrm{HNO}_3$ gives a curdy white precipitate, $[A]$, on addition of $\mathrm{AgNO}_3$. $[\mathrm{A}]$ on treatment with $\mathrm{NH}_4 \mathrm{OH}$ gives...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
Bond dissociation energy of $\mathrm{E}-\mathrm{H}$ bond of the " $\mathrm{H}_2 \mathrm{E}$ " hydrides of group 16 elements (given below), follows order.
(A) O
(B) S...
JEE Main Chemistry Easy
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Q JEE MAIN_2023
For a charged spherical ball, electrostatic potential inside the ball varies with r as $\mathrm{V}=2 a \mathrm{r}^2+\mathrm{b}$. Here, a and $b$ are constant and $r$...
JEE Main Physics Easy
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Q JEE MAIN 2023
Two bodies are projected from ground with same speeds $40 \mathrm{~ms}^{-1}$ at two different angles with respect to horizontal. The bodies were found to have...
JEE Main Physics Medium
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Q JEE-Main_2023
Compound $\mathrm{A}, \mathrm{C}_5 \mathrm{H}_{10} \mathrm{O}_5$, given a tetraacetate with $\mathrm{Ac}_2 \mathrm{O}$ and oxidation of A with $\mathrm{Br}_2-\mathrm{H}_2 \mathrm{O}$ gives an acid, $\mathrm{C}_5 \mathrm{H}_{10} \mathrm{O}_6$. Reduction...
JEE Main Chemistry Medium
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Q JEE MAIN 2023
Which element is not present in Nessler's reagent ?
JEE Main Chemistry Easy
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Q JEE MAIN 2023
The concentration of dissolved Oxygen in water for growth of fish should be more than ppm and Biochemical Oxygen Demand in clean water should be...
JEE Main Chemistry Hard
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Q JEE MAIN 2023
$\mathrm{KMnO}_4$ oxidises I- in acidic and neutral/faintly alkaline solution, respectively to
JEE Main Chemistry Easy
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