The reagent ' X ' used in the following reaction to obtain good yield of the product is

In the following reaction mixtures, I. \(\mathrm{Cu} / \mathrm{CuSO}_4+\mathrm{Ag} / \mathrm{Ag}_2 \mathrm{SO}_4\) II. Zn \(/ \mathrm{ZnSO}_4+\mathrm{Cu} / \mathrm{CuSO}_4\) copper respectively undergoes

Identify the non-reducing sugar from the following.

Which of the following compound has no reaction with sodium metal?

Aniline is not the major product in one of the following reactions. Identify that reaction

The formal charges of \(\mathrm{N}_{(1)}, \mathrm{N}_{(2)}\) and \(\mathrm{O}\) atoms in
are respectively

Identify the correct statements from the folluwing (A) At 298 K, the potential of hydrogen electrode placed in a solution of \(\mathrm{pH}=10\), is -0.59 V (B) The limiting molar conductivity of \(\mathrm{Ca}^{2+}\) and \(\mathrm{Cl}^{-}\)is 119 and \(76 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectively. The limiting molar conductivity of \(\mathrm{CaCl}_2\) is \(195 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-\frac{1}{2}}\) (C) The correct relationship between \(\mathrm{K}_{\mathrm{c}}\) and \(\mathrm{E}_{\text {cell }}^0\) is \(\mathrm{E}_{\mathrm{ccll}}^{-}=\frac{2.303 \mathrm{RT}}{\mathrm{nF}} \log \mathrm{~K}_{\mathrm{c}}\)

An aqueous dilute solution containing non-volatile solute boils at \(100.52^{\circ} \mathrm{C}\). What is the molality of solution? \(\left(K_b=0.52 \mathrm{~kg} \mathrm{~mol}^{-1} \mathrm{~K}\right.\), boiling temperature of water \(=100^{\circ} \mathrm{C}\) )

If the magnetic field of a plane electromagnetic wave is given by \(5 \times 10^{-6} \sin \left(0.6 \times 10^2 x+0.5 \times 10^{10} t\right)\), then the speed of the wave is

The average depth of an oil well is \(2000 \mathrm{~m}\). If the bulk modulus of oil is \(8 \times 10^8 \mathrm{~N} / \mathrm{m}^2\) and the density of oil is \(1500 \mathrm{~kg} / \mathrm{m}^3\). The fractional compression at the bottom of the well is (take, \(g=10 \mathrm{~m} / \mathrm{s}^2\) )

The area of a triangle (in sq. units) formed by the latus rectum of the parabola \(x^2=16 y\) and the lines joining the vertex of the parabola to the ends of the latus rectum is

The standard enthalpy of combustion of C (graphite), \(\mathrm{H}_2\) (g) and \(\mathrm{CH}_3 \mathrm{OH}(l)\) respectively are \(-393,-286\) and -726 \(\mathrm{kJ} \mathrm{mol}^{-1}\). What is the standard enthalpy of formation of methanol?

The wavenumber of first spectral line of Lyman series of \(\mathrm{He}^{+}\)ion is \(x \mathrm{~m}^{-1}\). What is the wavenumber (in \(\mathrm{m}^{-1}\) ) of second spectral line of Balmer series of \(\mathrm{Li}^{2+}\) ion?