List of top Physical Chemistry Questions

The phase diagram of water is best represented by
The number of CO stretching bands in the infrared spectrum of $Fe(CO)_5$ is
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 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]
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)
All possible lattice types are observed in the
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 common point defect(s) in a solid is/are
The volume fraction for an element in an fcc lattice is ____________ . (round off to two decimal places)
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 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: $R= 8.314 J K^{-1} mol^{-1}$]
The reaction involve(s)
The reaction involve(s)
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
The conversion of $ICl$ to $ICl^+$ involve(s)
A galvanic electrochemical cell made of Zn2+/Zn and Cu2+/Cu half-cells produces 1.10 V at 25°C. The ratio of |Zn2+| to |Cu2+| is maintained at 1.0. The ΔG° for the reaction when 1.0 mol of Zn gets dissolved is____kJ. (round off to the nearest integer)
[Given: Faraday's constant = 96485 C mol-1]
Iron is extracted from its ore via the reaction
$Fe_2O_3, + 3 CO→ 2 Fe + 3CO_2$
The volume of CO (at STP) required to produce 1 kg of iron is ________liters. (round off to the nearest integer)
[Given: Atomic wt. of Fe = 56; assume STP to be 0 °C and 1 atm]
At constant volume, 1.0 kJ of heat is transferred to 2 moles of an ideal gas at 1 atm and 298 K. The final temperature of the ideal gas is ____K. (round off to one decimal place)
[Given: R = 8.314 J K-1 mol-1]
For the reaction
$H_2PO_2^- (aq) + OH^- (aq) → HPO_3^{2-} (aq) + H_2(g)$
the rate expression is $k[H_2PO_2 ][OH ]^2$. If the concentration of $H_2PO_2^-$ is
The nature of interaction involved at the gas-solid interface in physisorption is
Dynamic Vapour Sorption (DVS) isotherm is a plot of A versus B
The phenomenon of increasing the solubility of weak electrolytes and non- polar molecules by the addition of a water miscible solvent in which the drug has good solubility is called.
The properties of solutions containing surface active agents change sharply over a narrow concentration range and are called as
Which of the following method is used for the determination of osmotic pressure?
Which of the following is NOT an intensive property?
Which is NOT the colligative property?
(A)Depression of freezing point
(B) Elevation of boiling point
(C)Elevation of vapour pressure
(D) Osmotic pressure
Choose the correct one of the following: