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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN _2021
The equilibrium constant for the reaction $$ \mathrm{A}(\mathrm{~S}) \rightleftharpoons \mathrm{M}(\mathrm{~s})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) $$ is $\mathrm{K}_p=4$. At equilibrium, the partial pressure of $\mathrm{O}_2$ is $\_\_\_\_$ atm. (Round...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A long solenoid with $1000 \mathrm{turns} / \mathrm{m}$ has a core material with relative permeability 500 and volume $10^3 \mathrm{~cm}^3$. If the core material is...
JEE Main Physics Easy
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Q JEE MAIN 2021
A circle $C$ touches the line $x=2 y$ at the point $(2,1)$ and intersects the circle $C_{1 \min }: x^2+y^2+2 y-5=0$ at two points $P$...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Tyndall effect is more effectively shown by :
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
The major product in the above reaction is :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A block moving horizontally on a smooth surface with a speed of $40 \mathrm{~ms}^{-1}$ splits into two equal parts. If one of the parts moves...
JEE Main Physics Medium
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Q _JEE MAIN_2021_
The addition of silica during the extraction of copper from its sulphide ore:-
JEE Main Chemistry Easy
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Q JEE MAIN 2021
In polythionic acid, $\mathrm{H}_2 \mathrm{~S}_{\mathrm{x}} \mathrm{O}_6(\mathrm{x}=3$ to 5$)$ the oxidation state(s) of sulphur is/are :
JEE Main Chemistry Easy
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Q JEE-MAIN 2021
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Barium carbonate...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
A parallel plate capacitor of capacitance $200 \mu \mathrm{~F}$ is connected to a battery of 200 V . A dielectric slab of dielectric constant 2...
JEE Main Physics Easy
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