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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
A monochromatic neon lamp with wavelength of 670.5 nm illuminates a photo-sensitive material which has a stopping voltage of 0.48 V. What will be the...
JEE Main Physics Easy
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Q JEE MAIN 2021
Which among the following is the strongest acid ?
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The spin-only magnetic moment value for the complex $\left[\mathrm{Co}(\mathrm{CN})_6\right]^{4-}$ is $\_\_\_\_$ BM.
[At. no. of $\mathrm{Co}=27$ ]
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A sample of a radioactive nucleus A disintegrates to another radioactive nucleus B, which in turn disintegrates to some other stable nucleus C. Plot of...
JEE Main Physics Easy
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Q JEE MAIN 2021
Water sample is called cleanest on the basis of which one of the BOD values given below
JEE Main Physics Easy
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Q JEE-MAIN 2021
For full scale deflection of total 50 divisions, 50 mV voltage is required in galvanometer. The resistance of galvanometer if its current sensitivity is 2...
JEE Main Physics Easy
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Q JEE MAIN 2021
Identify the process in which change in the oxidation state is five :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The Azimuthal quantum number for the valence electrons of Ga+ ion is _______.
(Atomic number of Ga = 31)
JEE Main Chemistry Medium
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Q JEE-MAIN 2021
A mass of 50 kg is placed at the centre of a uniform spherical shell of mass 100 kg and radius 50 m. If the...
JEE Main Physics Easy
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Q JEE MAIN 2021
What is the major product "P" of the following reaction ?
JEE Main Chemistry Easy
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