List of top Questions asked in IIT JAM CY

The spacing between successive rotational energy levels of a diatomic molecule XY and its heavier isotopic analogue X'Y' varies with the rotational quantum number, J, as
The phase diagram of water is best represented by
Capillary W contains water and capillary M contains mercury. The contact angles between the capillary wall and the edge of the meniscus at the air-liquid interface in $W$ and $M$ are $\theta_W$ and $\theta_M$, respectively. The contact angles satisfy the conditions
The Maxwell-Boltzmann distribution $f(v_x)$ of one-dimensional velocities $v_x$ at temperature T is [Given: A is a normalization constant such that $ \int_{-\infty}^{\infty} f(v_x) dv_x = 1$, and $k_B$ is the Boltzmann constant]
The potential for a particle in a one-dimensional box is given as:
$V(x)=0$ for $0≤x≤L,$ and $V(x) = ∞$ elsewhere.
The locations of the internal nodes of the eigenfunctions $\Psi _n(x), n≥2$, are
[Given: m is an integer such that 0<m<n]
The number of CO stretching bands in the infrared spectrum of $Fe(CO)_5$ is
The standard Gibbs free energy change for the reaction
$H_2O (g) → H_2 (g) + ½ O_2(g)$ at 2500 K is $+118 kJ mol^{-1}$
The equilibrium constant for the reaction is
[Given: $R= 8.314 J K^{-1} mol^{-1}$]
Among the following, the correct statement(s) is/are:
The compound(s) that participate(s) in Diels-Alder reaction with maleic anhydride is/are
Among the following, the suitable route(s) for the conversion of benzaldehyde to acetophenone is/are
The reaction involve(s)
The reaction involve(s)
The reason(s) for the lower stability of $Si_2H_6$ compared to $C_2H_6$ is/are
For an N-atom nonlinear polyatomic gas, the constant volume molar heat capacity Cv,m has the expected value of 3(N-1)R, based on the principle of equipartition of energy. The correct statement(s) about the measured value of Cv,m is/are
Zinc containing enzyme(s) is/are
The conversion of $ICl$ to $ICl^+$ involve(s)
The common point defect(s) in a solid is/are
Among of the following
the number of aromatic compounds is _______ .
the number of aromatic compounds is _______ .
The number of stereoisomers possible for the major product formed in the reaction
The number of stereoisomers possible for the major product formed in the reaction is _______.
is ________.
The number of signals observed in the $^1H NMR$ spectrum of the compound
The number of signals observed in the $^1H NMR$ spectrum of the compound
is _________.
The reaction of 122 g of benzaldehyde with 108 g of phenylhydrazine gave 157 g of the product
The reaction of 122 g of benzaldehyde with 108 g of phenylhydrazine gave 157 g of the product
The yield of the product is _________%. (round off to the nearest integer)
The B-B bond order in $B_2$ is ______.
The number of unpaired electrons in $[Co(H_2O)_6]^{2+} is ________.
The volume fraction for an element in an fcc lattice is ____________ . (round off to two decimal places)
steady current of 1.25 A is passed through an electrochemical cell for 1.5 h using a 12 V battery. The total charge, Q, drawn during this process is __________ Coulombs. (round off to the nearest integer)
The specific rotation of optically pure (R)-1-phenylethylamine is +40 (neat, 20 °C). A synthetic sample of the same compound is shown to contain 4:1 mixture of (S)- and (R)-enantiomers. The specific rotation of the neat sample at 20 °C is ____________. (round off to the nearest integer)