List of top Chemistry Questions asked in JEE Advanced

During debromination of meso-2,3-dibromobutane, the major compound formed is

(CH$_3 )_3$CMgCl on treatment with D$_2O$ produces

In Cannizzaro's reaction, the intermediate which is the best hydride donor is

Which one of the following species is not a pseudo halide?

How many optically active stereoisomers are possible for butane-2, 3-diol ?

The standard reduction potentials of $Cu^{2+} / Cu $ and $Cu^{2+} / Cu^+$ are 0.337 V and 0.153 V respectively. The standard electrode potential of $Cu^+ /Cu$ half-cell is

When cyclohexane is poured on water, it floats because

Which of the following compounds is expected to be coloured?

Ammonium dichromate is used in some fireworks. The green coloured powder blown in the air is

The cyanide ion $CN^-$ and $N_2$ are isoelectronic, but in contrast to $CN^-$ , $N_2$ is chemically inert because of

Among the following species, identify the isostructural pairs. $NF_3$, $NO_3^-$, $BF_3$, $H_3O^+$, $N_3H$

Arrange the following compounds in order of increasing dipole moment, toluene (I), m-dichlorobenzene (II), o-dichlorobenzene (III),p-dichlorobenzene (IV)

The ratio between the root mean square speed of $H_2$ at 50 K and that of $O_2$ at 800 K is

Which of the following has the maximum number of unpaired electrons ?

$^{27}_{13}AI$ is a stable isotope, $^{29}_{13}AI$ is expected to decay by

The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to

Sodium thiosulphate is prepared by

$KF$ combines with $HF$ to form $KHF_2.$ The compound contains the species

If $\alpha$ is the fraction of HI dissociated at equilibrium in the reaction, ${ 2HI(g) <=> H_2(g)+I_2(g)}$ starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are

Which of the following is the least stable and its existence is doubtful ?

An aqueous solution $FeSO_4 . Al_2(SO_4 )_3$ and chrome alum is heated with excess of $Na_2 0_2$ and filtered. The materials obtained are

Hydrolysis of one mole of peroxodisulphuric acid produces

Which one of the following oxides is neutral ?

A dilute aqueous solution of $ Na_2SO_4 $ is electrolysed using platinum electrodes. The products at the anode and cathode are respectively

Which one of the following molecules is planar?