List of top Chemistry Questions asked in IIT JAM CY

The product(s) in the following transformation is(are) 

The major products P and Q of the following reactions are 

The major product in the following reaction sequence is 

Pericyclic reactions involved in the synthesis of Vitamin D\(_2\) from Ergosterol are 

The correct order of the rate of mononitration using conc. H\(_2\)SO\(_4\)/conc. HNO\(_3\) at room temperature is

The major products P and Q of the following transformations are 

The major product of the following transformation is 

The figures (I, II, III) given below schematically represent variation of surface tension of three different aqueous solutions with increasing concentration of each of the solutes (surfactant, sodium chloride, and n-propanol). Match the figures with appropriate solutes and choose the correct option. 

The molecular structure of table sugar is

A cell is constructed by Cl\(_2\)/Cl\(^-\)(aq) and a standard hydrogen electrode half-cells. The standard potential of the complete cell is 1.38 V and \( \left(\frac{\partial E^0}{\partial T}\right)_P = -1.24 \, \text{mV K}^{-1} \). The \( \Delta S^0_{\text{reaction}} \) (in J K\(^{-1}\) mol\(^{-1}\)) for the following cell reaction is .................. \[ \text{H}_2 \text{(g)} + \text{Cl}_2 \text{(g)} \rightarrow 2 \text{H}^+ \text{(aq)} + 2 \text{Cl}^-\text{(aq)} \]
The number of species among the following, having bond order of three is ............. \[ \text{N}_2, \text{F}_2, \text{NO}^+, \text{O}_2^-, \text{N}_2^+, \text{CO}, \text{O}_2, \text{O}_2^{2-} \]
1.84 g of a mixture of CaCO\(_3\) and MgCO\(_3\) is heated till no further weight loss. The weight of the residue is 0.96 g. The % composition of CaCO\(_3\) in the mixture is ................. \[ \text{(round off to two decimal places)} \] \text{[Given: Atomic weight of Ca = 40; Mg = 24; C = 12; O = 16]}
The molar conductivity of a 0.02 M weak acid HA is 3.2 mS m\(^2\) mol\(^{-1}\) at 298 K. The \( pK_a \) of HA is ....................
In one second, 95 moles of He gas particles are hitting a wall of a cubic container of volume 1 dm\(^3\). If the average velocity component of the particles perpendicular to the wall is 1000 m s\(^{-1}\), then the pressure of the gas in the container is \( X \times 10^5 \, \text{N m}^{-2} \). The value of \( X \) is ...............
Solubility of PbCO\(_3\) in a buffer of pH 5 is \( X \times 10^{-4} \). The value of \( X \) is ..............................
The resonance frequency of \( ^1H \) nuclei is 300 MHz in an NMR spectrometer. If the spectrometer is operated at 12 T magnetic field, the resonance frequency (in MHz) of the same \( ^1H \) nuclei is ..................
Number of spin allowed transition(s) possible for \( d^2 \) octahedral configuration is .............
If \( y + x e^y = \sin x + \tan x \), then the value of \( \frac{dy}{dx} \) at \( x = 0 \) is ...................
The first rotational absorption of \(^{12}C^{16}O\) molecule is observed at 3.84 cm\(^{-1}\). If an isotopic substitution is made with \(^{18}O\) in the molecule, the frequency (in cm\(^{-1}\)) of first rotational absorption is ...............
A yellow compound X is produced after the reaction of \( K_2[Ni(CN)_4] \) with excess of \( K/\text{liq. NH}_3 \) at -33°C. The oxidation state of Ni in the compound X is ..........
Correct statement(s) with respect to defects in solids is(are)
The correct statement(s) among the following is(are)
The reaction(s) that will yield cyclic product is(are)
Consider Langmuir adsorption of a gas on a uniform solid surface having N number of surface sites. The free and adsorbed gas molecules are in dynamic equilibrium. If the fractional surface coverage is \( \theta \), the rate of adsorption of the gas is proportional to
For \([Mn(CO)_6]^{+}\) and \([V(CO)_6]^{-}\) complexes, the correct statement(s) is(are)