List of top Chemistry Questions asked in JEE Advanced

Standard electrode potential data are useful for understanding the suitability of an oxidant in a redox titration. Some half-cell reactions and their standard potentials are given below : $MnO^- _4(aq)+8H^+ (aq)+5e^- \longrightarrow Mn^{2+} (aq)+4H_2 O(l), E^\circ = 1.51\, V$ $Cr_2O^{2-} _7(aq)+14H^+ (aq)+6e^- \longrightarrow 2Cr^{3+} (aq)+7H_2 O(l), E^\circ = 1.38\, V$ $\hspace20mm Fe^{3+} (aq)+e^- \longrightarrow Fer^{2+} (aq) \, \, \, \, E^\circ=0.77\, V$ $\hspace20mm Cl_2 (g)+2e^- \longrightarrow 2Cl^{-} (aq) \, \, \, \, E^\circ=1.40\, V$ Identify the incorrect statement regarding the quantitative estimation of aqueous $Fe(NO_3)_2$

Anhydrous ferric chloride is prepared by

If I is the intensity of absorbed light and C is the concentration of AB for the photochemical process.$AB + hv\rightarrow$ AB, for the rate of formation of AB is directly proportional to

In the standardisation of Na$_2S_2O_3$ using K$_2Cr_2O_7$ by iodometry, the equivalent weight of K$_2Cr_2O_7$ is

The reaction,$3CIO^{-}(aq)\rightarrow CIO_3^- (aq)+2CI^-(aq)$ is an example of

An aqueous solution of $6.3\, g$ oxalic acid dehydrate is made upto $250\, mL$. The volume of $0.1N\, NaOH$ required to completely neutralize $10 \,ml$. of this solution is

At constant temperature, the equilibrium constant $ ( K_p)$ the decomposition reaction, $ N_2 O_4 \rightleftharpoons NO_2$, is expressed by $ K_p = \frac{ 4x^2 \, p }{ (1 - x^2 ) } , $ where, $ p$ = pressure,$ x $ = extent of decomposition. Which one of the following statement is true ?

The reaction of propene with HOCl proceeds via the addition of

The number of S - S bonds in sulphur trioxide trimer, $(S_3O_9)$ is

The correct order of equivalent conductance at infinite dilution of $LiCl, NaCl $ and $KCl $ is

In a solid $'AB'$ having the $NaCl$ structure, $'A'$ atoms occupy the corners of the cubic unit cell. If all the face centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

I -propanol and 2-propanol can be best distinguished by

Saturated solution of $KNO_3$ is used to make -salt-bridge- because

The number of nodal planes in a $p_x$ orbital is

The wavelength associated with a golf ball weighing 200 g and moving at a speed of 5 m/h is of the order

The quantum numbers $+\frac{1}{2}$ and $-\frac{1}{2}$ for the electron spin represent

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out

The correct order of acidic strength is

For the reversible reaction, $ N_2 \, ( g) + 3H_2 \, ( g) \leftrightharpoons 2NH_3 \, ( g ) $ at $ 500^\circ \, C, $ the value of $ K_p = 1.44 \times 10^ { - 5 } $ when partial pressure is measured in atmosphere. The corresponding value of $K_c$ with concentration in mol/L is

When two reactants, A and B are mixed to give products, C and D, the reaction quotient, (Q) at the initial stages of the reaction

Which of the following has the highest nucleophilicity?

Which of the following, has the most acidic hydrogen?

The order of reactivities of the following alkyl halides for a $S_N$2 reaction is-

The compressibility of a gas is less than unity at STP. Therefore,

Propyne and propene can be distinguished by