Contact us
Back

Report Issue

2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN_2021
The total number of electrons in all bonding molecular orbitals of $\mathrm{O}_2^{2-}$ is $\_\_\_\_$ (Round off to the nearest integer)
JEE Main Chemistry Medium
View Solution →
Q JEE MAIN 2021
The number of moles of CuO , that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g of $...
JEE Main Chemistry Medium
View Solution →
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) : Heavy water...
JEE Main Chemistry Easy
View Solution →
Q JEE MAIN 2021
1 mol of an octahedral metal complex with formula $\mathrm{MCl}_3 \cdot 2 \mathrm{~L}$ on reaction with excess of $\mathrm{AgNO}_3$ gives 1 mol of AgCl ....
JEE Main Chemistry Easy
View Solution →
Q JEE MAIN_2021_
10.0 mL of $0.05 \mathrm{M} \mathrm{KMnO}_4$ solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate solution. The strength of given...
JEE Main Chemistry Easy
View Solution →
Q JEE MAIN 2021
1 kg of 0.75 molal aqueous solution of sucrose can be cooled up to $-4^{\circ} \mathrm{C}$ before freezing. The amount of ice (in g )...
JEE Main Chemistry Hard
View Solution →
Q JEE MAIN 2021
In a Young's double slit experiment, the slits are separated by 0.3 mm and the screen is 1.5 m away from the plane of slits....
JEE Main Physics Easy
View Solution →
Q JEE MAIN 2021
A capacitor of $50 \mu \mathrm{~F}$ is connected in a circuit as shown in figure. The charge on the upper plate of the capacitor is...
JEE Main Physics Easy
View Solution →
Q JEE-MAIN 2021
Given below are two statements :
Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper.
...
JEE Main Chemistry Easy
View Solution →
Q JEE MAIN_2021_
$$ 2 \mathrm{SO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{SO}_3(\mathrm{~g}) $$ The above reaction is carried out in a vessel starting with partial pressure $\mathrm{P}_{\mathrm{SO}_3}=250 \mathrm{mbar}, \mathrm{P}_{\mathrm{O}_2}=750 \mathrm{~m}$ bar...
JEE Main Chemistry Easy
View Solution →