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2019 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2019
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?
JEE Main Chemistry Easy
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Q JEE MAIN 2019
The pH of rain water, is approximately
JEE Main Chemistry Easy
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Q JEE MAIN 2019
Let $S$ be the set of all real values of $\lambda$ such that a plane passing through the points $\left(-\lambda^2, 1,1\right)$, $\_\_\_\_$ $\left(1,-\lambda^2, 1\right)$ and...
JEE Main Mathematics Easy
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Q JEE MAIN 2019
The temporary hardness of water is due to
JEE Main Chemistry Easy
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Q JEE MAIN 2019
When the first electron gain enthalpy $\left(\Delta_{\mathrm{eg}} \mathrm{H}\right)$ of oxygen is $-141 \mathrm{~kJ} / \mathrm{mol}$, its second electron gain enthalpy is
JEE Main Chemistry Easy
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Q JEE MAIN 2019
The mean and the variance of five observations are 4 and 5.20, respectively. If three of the observations are 3, 4 and 4; then the...
JEE Main Mathematics Medium
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Q JEE MAIN 2019
The major product of the following reaction
JEE Main Chemistry Medium
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Q JEE MAIN 2019
The expression $\sim(\sim p \rightarrow q)$ is logically equivalent to
JEE Main Mathematics Easy
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Q JEE MAIN 2019
A solution containing 62 g ethylene glycol in 250 g water is cooled to $-10^{\circ} \mathrm{C}$. If $\mathrm{K}_{\mathrm{f}}$ for water is $1.86 \mathrm{Kkg} \mathrm{mol}^{-1}$, the...
JEE Main Chemistry Easy
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Q JEE MAIN 2019
Let $Z$ be the set of integers. If $A=\left\{x \in Z: 2^{(x+2)\left(x^2-5 x+9\right)}=1\right\}$ and $B=\{x \in Z:-3<2 x-1<9\}$, then the number of subsets of the...
JEE Main Mathematics Easy
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