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2023 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2023
The number of possible isomeric products formed when 3-chloro-1-butene reacts with HCl through carbocation formation is _____
JEE Main Chemistry Medium
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Q JEE MAIN 2023
The number of correct statements from the following _____
A. For 1s orbital, the probability density is maximum at the nucleus.
B. For 2s...
JEE Main Chemistry Hard
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Q JEE MAIN 2023
The number of species from the following carrying a single lone pair on central atom Xenon is ____ $...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
1 g of a carbonate $\left(\mathrm{M}_2 \mathrm{CO}_3\right)$ on treatment with excess HCl produces 0.01 mol of $\mathrm{CO}_2$. The molar mass of
JEE Main Chemistry Easy
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Q JEE MAIN 2023
0.400 g of an organic compound $(\mathrm{X})$ gave 0.376 g of AgBr in Carius method for estimation of bromine. $\%$ of bromine in the compound...
JEE Main Physics Easy
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Q JEE MAIN 2023
The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is ____
A. The catalyst is diffused over the surface...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
Which of the following complexes will exhibit maximum attraction to an applied magnetic field?
JEE Main Chemistry Medium
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Q JEE MAIN 2023
For complete combustion of ethene. $\mathrm{C}_2 \mathrm{H}_4(\mathrm{~g})+3 \mathrm{O}_2(\mathrm{~g}) 2 \mathrm{CO}_2(\mathrm{~g})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$ the amount of heat produced as measured in bomb calorimeter is $...
JEE Main Chemistry Medium
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Q JEE MAIN 2023
4.5 moles each of hydrogen and iodine is heated in a sealed ten litre vessel. At equilibrium, 3 moles of HI were found. The equilibrium...
JEE Main Chemistry Easy
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Q JEE MAIN 2023
The covalency and oxidation state respectively of boron in $\left[\mathrm{BF}_4\right]^{-}$, are
JEE Main Chemistry Easy
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