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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
In a photoelectric experiment ultraviolet light of wavelength 280 nm is used with lithium cathode having work function $\phi=2.5 \mathrm{eV}$. If the wavelength of incident...
JEE Main Physics Easy
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Q JEE MAIN 2021
A swimmer wants to cross a river from point A to point B. Lint AB makes an angle of 30º with the flow of river....
JEE Main Physics Easy
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Q JEE MAIN 2021
At 298.2 K the relationship between enthalpy of bond dissociation (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) for hydrogen (EH) and its isotope, deuterium ( $\mathrm{E}_{\mathrm{D}}$ ), is...
JEE Main Chemistry Medium
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Q JEE MAIN 2021
Benzene on nitration gives nitrobenzene in presence of $\mathrm{HNO}_3$ and $\mathrm{H}_2 \mathrm{SO}$ mixture, where
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A particle executes simple harmonic motion represented by displacement function as
$x(t)=A \sin (\omega t+\varphi)$
If the position and velocity of the particle...
JEE Main Physics Easy
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Q JEE MAIN 2021
The water soluble protein is :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Sodium stearate $\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{16} \mathrm{COO}^{-} \mathrm{Na}^{+}$is an anionic surfactant which forms micelles in oil. Choose the correct statement for it from the following :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A particular hydrogen like ion emits radiation of frequency $2.92 \times 10^{15} \mathrm{~Hz}$ when it makes transition from $n=3$ to $n=1$. The frequency in Hz...
JEE Main Physics Easy
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Q JEE MAIN 2021
Bakelite is a cross-linked polymer of formaldehyde and :
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
A bomb is dropped by fighter plane flying horizontally. To an observer sitting in the plane, the trajectory of the bomb is a
JEE Main Physics Easy
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