List of top Chemistry Questions asked in JEE Advanced

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

Among the following compounds, the most acidic is

Extraction of metal from the ore cassiterite involves

Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is

Bombardment of aluminium by a-particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products X , Y and Z respectively, are

$AgNO_3$ (aqueous) was added to an aqueous $KCl$ solution gradually and the conductivity of the solution was measured. The plot of conductance $\Lambda$ versus the volume of $AgNO_3$ is

Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are

Oxidation states of the metal in the minerals haematite and magnetite, respectively, are