The correct order of rate of dehydrohologenation of the following halides in the presence of alcoholic KOH is

Match the following:

The correct answer is

The volume of water required to dissolve \(0.1 \mathrm{~g} \mathrm{PbCl}_2\) to get a saturated solution (in mL ) is \(\left(\right.\) Given \(\mathrm{K}_{\mathrm{sp}}\left(\mathrm{PbCl}_2\right)=3.2 \times 10^{-8} ;\) Atomic mass of \(\left.\mathrm{Pb}=207 \mathrm{u}\right)\)

Which of the following salts can accommodate more number of \(\mathrm{H}_2 \mathrm{O}\) molecules per molecule in their halide hydrates?

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 \(\mathrm{E}_{\mathrm{ccll}}^{-}=\frac{2.303 \mathrm{RT}}{\mathrm{nF}} \log \mathrm{~K}_{\mathrm{c}}\)

Calculate \(\Delta H\) in \(\mathrm{kJ}\) for the following reaction \[ \mathrm{C}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g}) \] Given that, \[ \begin{gathered} \mathrm{H}_2 \mathrm{O}(g)+\mathrm{C}(g) \longrightarrow \mathrm{CO}(g)+\mathrm{H}_2(g) ; \ \Delta H=+131 \mathrm{~kJ} \ \mathrm{CO}(g)+\frac{1}{2} \mathrm{O}_2(g) \longrightarrow \mathrm{CO}_2(g) ; \ \Delta H=-282 \mathrm{~kJ} \ \mathrm{H}_2(g)+\frac{1}{2} \mathrm{O}_2(g) \longrightarrow \mathrm{H}_2 \mathrm{O}(g) ; \ \Delta H=-242 \mathrm{~kJ} \end{gathered} \]

For the formation of ammonia gas from its constituent elements, the ${\mathrm{K}}_{\mathrm{P}}/{\mathrm{K}}_{\mathrm{C}}$ is

\(e^{\int_0^{\pi / 2} \sqrt{\frac{1-\sin 2 x}{1+\sin 2 x}} d x}=\)

The vector that is parallel to the vector $2\hat{\mathrm{i}}-2\hat{\mathrm{j}}-4\hat{\mathrm{k}}$ and coplanar with the vectors $\hat{\mathrm{i}}+\hat{\mathrm{j}}$ and $\hat{\mathrm{j}}+\hat{\mathrm{k}}$ is

The energy of an electromagnetic radiation is \(19.875 \times 10^{-13}\) ergs. What is its wave number in \(\mathrm{cm}^{-1}\) ? \(\left(h=6.625 \times 10^{-27}\right.\) erg sec, \(\left.c=3 \times 10^{10} \mathrm{~cm} \mathrm{sec}^{-1}\right)\)

Two convex lenses of focal lengths \(f_1\) and \(f_2\) form images with magnification \(m_1\) and \(m_2\), when used individually for an object kept at the same distance from the lenses. Then, \(f_1 / f_2\) is

If a plane \(x+y+z-5=0\) intersects the line joining \(\mathrm{A}(1,1,1)\) and \(\mathrm{B}(2,2,2)\) at \(\mathrm{P}\) then \(\mathrm{AP}: \mathrm{PB}=\)

Suppose a line makes an angle of \(120^{\circ}\) with the positive direction of \(X\)-axis. If the length of the perpendicular from origin to that line Is 4 , then the equation of the line is