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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
The number of chiral centres present in [B] is
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Q JEE MAIN 2020
On heating, lead (II) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on heating with...
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Q JEE MAIN 2020

Identify the incorrect statement from the option below for the above cell:
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Q JEE MAIN 2020
The intermolecular potential energy for the molecules A, B, C and D given below suggests that :
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Q JEE MAIN 2020
The pair in which both the species have the same magnetic moment (spin only) is
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Q JEE MAIN 2020
$[\mathrm{P}]$ on treatment with $\mathrm{Br}_2 / \mathrm{FeBr}_3$ in $\mathrm{CCl}_4$ produced a single isomer $\mathrm{C}_8 \mathrm{H}_7 \mathrm{O}_2 \mathrm{Br}$ while heating $[\mathrm{P}]$ with sodalime gave toluene. The...
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Q JEE MAIN 2020
The number of isomers possible for $\left[\mathrm{Pt}(\mathrm{en})\left(\mathrm{NO}_2\right)_2\right]$ is
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Q JEE MAIN 2020
When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are...
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Q JEE MAIN 2020
The ionic radii of $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+}$and $\mathrm{Mg}^{2+}$ are in the order
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Q JEE MAIN 2020
The region in the electromagnetic spectrum where the Balmar series lines appear is
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