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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
In the sulphur estimation, 0.471 g of an organic compound gave 1.44 g of barium sulphate. The percentage of sulphur in the compound is _____%....
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A copper complex crystallising in a CCP lattice with a cell edge of 0.4518 nm has been revealed by employing X-ray diffraction studies. The density...
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
Consider the given reaction, the product A is :
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
Consider the given reaction, Identify 'X' and 'Y'
JEE Main Chemistry Easy
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Q JEE MAIN 2021
An aqueous KCl solution of density $1.20 \mathrm{~g} \mathrm{~mL}^{-1}$ has a molality of $3.30 \mathrm{~mol} \mathrm{~kg}^{-1}$. The molarity of the solution in $\mathrm{mol} \mathrm{L}^{-1}$ is...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be ________. (Integer answer)
JEE Main Chemistry Hard
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Q JEE-MAIN 2021
The number of stereoisomers possible for 1,2- dimethyl cyclopropane is :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The Born-Haber cycle for KCl is evaluated with the following data:
$...
JEE Main Chemistry Medium
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Q JEE MAIN 2021
If the standard molar enthalpy change for combustion of graphite powder is $-2.48 \times 10^2 \mathrm{~kJ} \mathrm{~mol}^{-1}$ , the amount of heat generated on combustion...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The following data was obtained for chemical reaction given below at 975 K .
$...
JEE Main Chemistry Easy
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