The Hoffmann bromamide degradation reaction is used for conversion of

Transition metal ions having zero unpaired electrons are:
(A) \(Sc^{3+}\)
(B) \(Ti^{3+}\)
(C) \(Cu^{2+}\)
(D) \(Zn^{2+}\)
(E) \(Mn^{2+}\)
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Which among the following are coordination complexes?
(A) Mohr's salt
(B) Tetraamminediaquacobalt (II) ion
(C) Carnallite
(D) Potassium ferricyanide
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The reduction of cyclohexanone with LiAlH4 will give:

Arrange the following compounds in order of in increasing boiling points:
(A) Bromomethane
(B) Bromoform
(C) Chloromethane
(D) Dibromomethane
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Arrange the following haloalkanes in decreasing order of boiling point - Chloromethane, Bromomethane, dibromomethane, bromoform

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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 standard Oxidation potential \(E^0\) for the half cell reactions are
\(Zn \rightarrow Zn ^{2+}+2 e^{-}: E^0=+0.76 V\)
\(Fe \rightarrow Fe ^{2+}+2 e^{-}: E^0=+0.41 V\)
The emf of cell \(Fe ^{2+}+ Zn \rightarrow Zn ^{2+}+ Fe\) is

An ideal battery of 6 V and resistance R are connected in series in the primary circuit of a potentiometer of length 4 m and resistance \( 10 \Omega \). The value of R, to give a potential difference of 10 mV across 20 cm of potentiometer wire is:

The equation of the tangent line to \(y=2 x^2+7\) , which is parallel to the line \(4 x-y+3=0\) is

The decreasing order of basicity of following amines in aqueous phase ;
(A) N, N-Dimethylmethamine
(B) Methanamine
(C) N-Ethylethanamine
(D) Phenylmethanamine
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Identify the hormone releasing IUDs -

The solution set of the inequality \(3 x+5 y<15\) is :

Two nuclei have mass numbers 125 and 27, respectively. The mass density ratio of their nuclei will be