\(C_6H_5NO_2 \xrightarrow{(1) Fe/HCl \ (2) HNO_2 \ (3) H_2O}\) A Product 'A' is:

Ethyl alcohol can be prepared from the following set of reactants and subsequent hydrolysis of adduct :

Toluene on chlorination in presence of UV light gives

How many moles of dichromate ion will be required to oxidize one mole of \(Fe^{2+}\) to \(Fe^{3+}\) ions in acidic solution?

The amines which are soluble in water:
(A) Methanamine
(B) Ethanamine
(C) Propanamine
(D) Benzylamine
Choose the correct answer from the options given below:

Which of the following material is a semiconductor?

Read the passage carefully and answer
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 measured potential for
\(A g ^{+}+ e ^{-} \rightarrow A g ( s )\)
does not change with

Biolistics (gene gun) is suitable for:

The net primary productivity (NPP) in an ecosystem can be represented by:

Predict the percentage of nitration products when aniline is subjected to nitration with conc. \(\mathrm{HNO}_3 /\) conc. \(\mathrm{H}_2 \mathrm{SO}_4\).

The van't Hoff Factor, \(i\) for complete dissociation of (i) NaCl , (ii) \(MgSO _4\) and (iii) \(K _2 SO _4\) are

The angle of minimum deviation if the refracting angle of a prism is \(2θ\), and the refractive index of the material of the prism is \(\cot θ\) is:

For \(y=x e^x\), which of the following is correct ?