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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and $\mathrm{P}_4 \mathrm{O}_{10}$ (in $4: 1$ ratio) is :
JEE Main Chemistry Easy
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Q JEE MAIN 2021 S2
Let $A=\left\{n \in N \mid n^2 \leq n+10,000\right\}, B=\{3 k+1 \mid k \in N\}$ and $C=\{2 k \mid k \in N\}$, then the sum of...
JEE Main Mathematics Medium
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Q JEE-MAIN 2021
A reversible engine has efficiency of $1 / 4$. If the temperature of the sink is reduced by $58^{\circ} \mathrm{C}$, its efficiency becomes double. Calculate...
JEE Main Physics Easy
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Q JEE MAIN 2021
Given below are two statements : One is labelled as Assertion A and other is labelled as Reason R. Assertion A : The dihedral angles...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Which one of the following metal complexes is most stable?
JEE Main Chemistry Medium
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Q JEE MAIN 2021
Thiamine and pyridoxine are also known respectively as :
JEE Main Chemistry Easy
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Q JEE MAIN 2021
Orlon fibres are made up of :
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 : Sharp glass...
JEE Main Chemistry Easy
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Q JEE MAIN 2021
The set having ions which are coloured and paramagnetic both is -
JEE Main Chemistry Easy
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Q JEE MAIN 2021
An electron of mass me and a proton of mass $m_p= 1836 \mathrm{~m}_{\mathrm{e}}$ are moving with the same speed. The ratio of their de Broglie...
JEE Main Physics Easy
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