Which of the following compounds will give a pair of enantiomers upon nucleophilic substitution reaction with a hydroxide ion?

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When a metal is placed in a solution of its ions, the metal can lose electron and can go in the solution as ion or the metal ion in the solution can take electron from the electrode and get deposited as metal. Thus, the electrode acquires either positive or negative charge with respect to the solution leading to the development of a potential difference between the metal electrode and the solution. This potential difference is called the electrode potential of the metal. The electrode potential of a metal is a measure of relative tendency to undergo oxidation (loss of electron) or reduction (gain of electron). When the concentration of the ions in the solution is unity, the electrode potential is called standard electrode potential. The magni of potential depends upon the nature of electrode, concentration of ions in solution and the temperature. In a galvanic cell, the electrode at which oxidation occurs is known as anodic half-cell and the electrode at which reduction occurs is known as cathodic half cell. The emf of the cell in terms of standard reduction potential is given by \(E_{\text {cell }}^{\circ}=E_{\text {cathode }}^{\circ}-E_{\text {anode. }}^{\circ}\).The standard free energy change of the redox reaction taking place in the cell is related to \(E_{\text {cell }}^{\circ}\) by \(\Delta G^{\circ}=-n F E^{\circ}\). A redox reaction would occur spontaneously if the free energy change is negative. The equilibrium constant of the reaction is related to the standard free energy change by \(\Delta G^{\circ}=-R T \ln K\).
The equillibrium constant of a feasible cell reaction is

Identify transition metal complexes which are not octahedral in shape.
(A) \(\text{[Co(NH}_3)_6\text{]}^{3+}\)
(B) \(\text{[Ni(CO)}_4\text{]}\)
(C) \(\text{[CoCl(NH}_3)_6\text{]}^{2+}\)
(D) \(\text{[CoCl}_2\text{(NH}_3)_4\text{]}^{+}\)
(E) \(\text{[PtCl}_4\text{]}^{2-}\)
Choose the correct answer from the options given below :

In inorganic salt analysis, for the indicatory test of \(Cl^-\), conc. \(H_2SO_4\) is used. This is because:

"Wood spirit " is

\(\text{E}_{\text{cell}}\) for the given cell
\(\text{Pt(s)/Br}_2\text{(l)/Br}^-\text{(0.1 M)//Cl}^-\text{(0.01 M)/Cl}_2\text{(g)(1 atm)/Pt(s)}\)
\(\text{[Given E}^\text{o}_{\text{Br}_2\text{/Br}^-} = +1.09\text{ V, E}^\text{o}_{\text{Cl}_2\text{/Cl}^-} = +1.36\text{ V}]\) at 298 K is

Which one of the following correctly represents the concentration term 'ppm'?

Arrange the following compounds in increasing order of boiling point.
(A) Ethanol
(B) Diethyl ether
(C) Ethanal
(D) Ethane
Choose the correct answer from the options given below:

A long straight wire carries a current of 12 A. Another straight wire of length 5 cm placed parallel to it at a distance of 5 cm, carries a current of 2 A. The magnetic force on the smaller wire is

The shortest distance between the lines \(\vec{r}=(\hat{i}+2 \hat{j}+3 \hat{k})+\lambda(2 \hat{i}+3 \hat{j}+4 \hat{k})\) and \(\vec{r}=(2 \hat{i}+4 \hat{j}+5 \hat{k})+\mu(3 \hat{i}+4 \hat{j}+5 \hat{k})\) is equal to :

If \(A=\{1,2,3,4, \cdots, n\}\) and \(B=\{x, y\}\), then the number of surjections from \(A\) to \(B\) is

Biolistics (gene gun) is suitable for:

The cause of the depletion layer in the p-n junction region is