Coupling of benzene diazonium chloride with phenol yields colored compounds called azo dyes. The reaction requires

Observed and calculated values for the standard electrode potentials \(\left(M^{2+} \rightarrow M\right)\) are shown in the figure above.
Based on the data shown, which of the following statements are true?
(A) Cu is not able to liberate \(H _2\) from acid.
(B) Zn is not able to liberate \(H _2\) from acid.
(C) An increase in the sum of the first and second ionization enthalpies leads to lessnegative \(E^{\circ}\) values.
(D) Only oxidising acids react with Cu.
Choose the correct answer from the options given below:

Read the passage carefully and answer
The crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. Ligands are treated as point charges in case of anions or dipoles in case of neutral molecules. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ion. However, when this negative field is due to ligands (either anions or the negative ends of dipolar molecules like NH3 and H2O) in a complex, it becomes asymmetrical and the degeneracy of the d orbitals is lifted. It results in splitting of the d orbitals. The pattern of splitting depends upon the nature of the crystal field.
The hybridisation and magnetism of the complexes \(\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}\) and \(\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}\) respectively is:

The reagents involved in the following conversion are

Which of the following complexes will show absorbance of light at the lowest wavelength?

\(\text{C-Cl}\) bond in chlorobenzene in comparison to \(\text{C-Cl}\) bond in methyl chloride is :

Match List-I with List-II

List-I	List-II
(A) Acetone to secondary alcohol	(I) \(CrO _3\)
(B) Ethanol to Diethyl ether	(II) \(Zn\)
(C) Ethanol to ethanal	(III) \(NaBH _4\)
(D) Phenol to Benzene	(Iv) \(H _2 SO _4\) at 413 K

Choose the correct answer from the options given below :

\(V_{ p } < V_{ n }\)
\(V_{ p }>V_{ n }\)
\(V_{ p }>V_{ n }\)
\(V_{ p }>V_{ n }\)
A ray of light incident on an equilateral glass prism of refractive index \( \mu = \sqrt{3} \), travels parallel to the base of the prism inside it. What is the angle of incidence for this ray ?

The particular solution of the differential equation \(\frac{d y}{d x}=8 y x\) when \(y=1\) at \(x=0\) is:

In the given arrangement, the current in the wire XY is increasing steadily. The direction of induced current in the metal rings 1 and 2 will be, respectively.

Which of the following enzymes join the sticky ends in recombinant DNA technology?

For the system of equations \(A X=B\), which of the following is correct?

If \(A = \begin{vmatrix} a & d & l \\ b & e & m \\ c & f & n \end{vmatrix}\) and \(B = \begin{vmatrix} l & m & n \\ a & b & c \\ d & e & f \end{vmatrix}\), then