List of top Chemistry Questions asked in JEE Advanced

How many litres of water must be added to 1 L of an aqueous solution of HCL with a pH of 1 to create an aqueous solution with pH of 2?
The thermal dissociation of equilibrium of $CaCO_3 $ (s) is studied under different conditions $ CaCO_3 \, ( g) \rightleftharpoons CaCO ( g ) + CO_2 ( g)$ For this equilibrium, the correct statement(s) is/are
Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at $25^\circ $C. For this process, the correct statement is
Consider the following complex ions, $P, Q$ and $R$. $P=[FeF_6]^{3-},Q=[V(H_2O)_6]^{2+} and \, R=[Fe(H_2O)_6]^{2+} $ The correct order of the complex ions, according to their spin-only magnetic moment values (in $B.M.$) is
The compound that does not liberate $CO_2$, on treatment with aqueous sodium bicarbonate solution, is
The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to
The carbon-based reduction method is not used for the extraction of
Upon treatment with ammoniacal $H_2 S$, the metal ion that precipitates as a sulphide is
Among $P, Q, R$ and $S$, the aromatic compounds(s) is/are
In allene $(C_3H_4)$ the type(s) of hybridisation of the carbon atoms, is (are)
For a dilute solution containing 2.5 g of a non-volatile non-electrolyte solute in 100g of water, the elevation in boiling point at 1 atm pressure is 2$^{\circ}$C. Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure (mm of Hg) of the solution is (take $K_b = 0.76 K kg mol^{-1}).$
Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures 2T and 3T respectively. The temperature of the middle (i.e. second) plate under steady state condition is
The reaction of white phosphorus with aqueous $NaOH$ gives phosphine along with another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and the other product respectively are
With respect to graphite and diamond, which of the statement(s) given below is/are correct?
The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [$a_0$ is Bohr radius]
Identify the binary mixture(s) that can be separated into individual compounds, by differential extraction, as shown in the given scheme.
For one mole of a van der Waals' gas when $b = 0$ and $T = 300\, K$. the $pV\, vs \,1/V$ plot is shown below. The value of the van der Waals' constant a (atm $L\, mol^{-2}$)
The shape of $XeO_2F_2$ molecule is
The compound that undergoes decarboxylation most readily under mild condition is
The carboxyl functional group $(- COOH)$ is present in
In the cyanide extraction process of silver from argentite ore, the oxidising and reducing agents used are
The number of optically active products obtained from the complete ozonolysis of the given compound, is
Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?
Choose the correct reason(s) for the stability of the lyophobic colloidal particles.
According to kinetic theory of gases