Bond order normally gives idea of stability of a molecular species. All the molecules viz. \(H_2,\,\, Li_2\) and \(B_2\) have the same bond order yet they are not equally stable. Their stability order is

When \(\psi_{\mathrm{A}}\) and \(\psi_{\mathrm{B}}\) are the wave functions of atomic orbitals, then \(\sigma^*\) is represented by _______.

Given below are two statements:
Statement I: The number of pairs among \([\text{Ti}^{4+}, \text{V}^{2+}]\), \([\text{V}^{2+}, \text{Mn}^{2+}]\), \([\text{Mn}^{2+}, \text{Fe}^{3+}]\) and \([\text{V}^{2+}, \text{Cr}^{2+}]\) in which both ions are coloured is \(3\).
Statement II: The number of pairs among \([\text{La}^{3+}, \text{Yb}^{2+}]\), \([\text{Lu}^{3+}, \text{Ce}^{4+}]\) and \([\text{Ac}^{3+}, \text{Lr}^{3+}]\) ions in which both are diamagnetic is \(3\).
In the light of the above statements, choose the correct from the options given below:

Choose the INCORRECT statement

The \(IUPAC\) name for the following compound is:

To inhibit the growth of tumours, identify the compounds used from the following: \((A)\) \(EDTA\)  \((B)\) Coordination Compounds of \(Pt\)  \((C)\) \(D-\)Penicillamine  \((D)\) Cis - Platin Choose the correct answer from the option given below:

Given below are two statements :- Statement \(I:\)- In redox titration, the indicators used are sensitive to change in \(pH\) of the solution. Statement \(II:\)- In acid-base titration, the indicators used are sensitive to change in oxidation potential. In the light of the above statements, choose the most appropriate answer from the options given below

A substance ' X ' \((1.5 g)\) dissolved in 150 g of a solvent ' Y ' (molar mass \(=300 g mol ^{-1}\) ) led to an elevation of the boiling point by 0.5 K . The relative lowering in the vapour pressure of the solvent ' Y ' is __________ \(\times 10^{-2}\). (Nearest integer) [Given : \(K _{ b }\) of the solvent \(=5.0 K kg mol ^{-1}\) ] Assume the solution to be dilute and no association or dissociation of X takes place in solution.

The ascending acidity order of the following \(\mathrm{H}\) atoms is _______.

Identify the correct statements :
A. Effective capacitance of a series combination of capacitors is always smaller than the smallest capacitance of the capacitor in the combination.
B. When a dielectric medium is placed between the charged plates of a capacitor, displacement of charges cannot occur due to insulation property of dielectric.
C. Increasing of area of capacitor plate or decreasing of thickness of dielectric is an alternate method to increase the capacitance.
D. For a point charge, concentric spherical shells centered at the location of the charge are equipotential surfaces.
Choose the correct answer from the options given below.

The resistance of the meter bridge \(AB\) in given figure is \(4\,\Omega \). With a cell of emf  \(\varepsilon \, = 0.5\,\,V\) and rheostat resistance \(R_h = 2\,\Omega \) the null point is obtained at some point \(J.\) When the cell is replaced by another one of emf \(\varepsilon \, = {\varepsilon _2}\) the same null point \(J\) is found for \(R_h = 6\,\Omega .\) The \(emf\)  \({\varepsilon _2}\) is ................. \(V\)

Let \(w _1\) be the point obtained by the rotation of \(z_1=5+4 i\) about the origin through a right angle in the anticlockwise direction, and \(w_2\) be the point obtained by the rotation of \(z_2=3+5 i\) about the origin through a right angle in the clockwise direction. Then the principal argument of \(w _1- w _2\) is equal to \(...........\).

A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements about (Y) and (Z).

A. Both (Y) and (Z) have same molar mass.
B. (Y) and (Z) can be distinguished from each other by \(NaHCO_3\).
C. (Y) and (Z) react with HCN with same rates.
D. (Y) and (Z) undergo addition reaction with \(2,4\)-DNP.
Choose the correct answer from the options given below: