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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
The first member of the Balmer series of hydrogen atom has a wavelength of 6561 Å. The wavelength of the second member of the Balmer...
JEE Main Physics Easy
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Q JEE MAIN 2020
Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume...
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Q JEE-MAIN 2020
Amount of solar energy received on the earth’s surface per unit area per unit time is defined a solar constant. Dimension of solar constant is
JEE Main Physics Easy
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Q JEE MAIN 2020
Chlorine reacts with hot and concentrated NaOH and produces compounds (X) and (Y). Compound (X) gives white precipitate with silver nitrate solution. The average bond...
JEE Main Chemistry Easy
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Q JEE MAIN 2020
The series combination of two batteries, both of the same emf 10 V , but different internal resistance of $20 \Omega$ and $5 \Omega$, is...
JEE Main Physics Medium
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Q JEE MAIN 2020
For the reaction
$\mathrm{A}(\mathrm{l}) \rightarrow 2 \mathrm{~B}(\mathrm{~g})$
$\Delta \mathrm{U}=2.1 \mathrm{kcal}, \Delta \mathrm{S}=20 \mathrm{cal} \mathrm{K}^{-1}$ at 300 K . Hence $\Delta \mathrm{G}$ in kcal...
JEE Main Chemistry Medium
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Q JEE-MAIN 2020
The mass density of a planet of radius $R$ varies with the distance $r$ from its centre as $\rho(r)=\rho_0\left(1-\frac{r^2}{R^2}\right)$. Then the gravitational field is maximum...
JEE Main Physics Easy
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Q JEE MAIN 2020
An asteroid is moving directly towards the centre of the earth. When at a distance of 10 R (R is the radius of the earth)...
JEE Main Physics Medium
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Q JEE MAIN 2020
An electron gun is placed inside a long solenoid of radius R on its axis. The solenoid has n turns/length and carries a current I....
JEE Main Physics Medium
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Q JEE MAIN 2020
The number of chiral carbons in chloramphenicol is ___________.
JEE Main Chemistry Easy
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