In hemoglobin the metal ion present is

For same mass of two different ideal gases of molecular weights \(M_{1}\) and \(M_{2}\), Plots of log \(V\) vs log \(p\) at a given constant temperature are shown. Identify the correct option.

\(\begin{array}{lllll}\text {The two } & \text { half-cell } & \text { reactions } & \text { of } & \text { an }\end{array}\) electrochemical cell is given as \(\mathrm{Ag}^{+}+e^{-} \longrightarrow \mathrm{Ag} ; \quad E_{\mathrm{Ax}^{+} / \mathrm{Ag}}^{\circ}=-0.3995 \mathrm{V}\) \(\mathrm{Fe}^{3+} \longrightarrow \mathrm{Fe}^{3 *}+e^{-} ; E_{\mathrm{Fe}^{3+} \mathrm{Fv}^{2+}}=-0.7120 \mathrm{V}\). The value of cell EMF will be

The compressibility factor \((Z)\) of one mole of a van der Waals' gas of negligible ' \(a\) ' value is

A \(100\) mL, \(0.1=\mathrm{M}\) solution of ammonium acetate is diluted by adding \(100 \mathrm{mL}\) of water. The pH of the resulting solution will be \(\left(p K_{a}\right.\) of acetic acid is nearly equal to \(\mathrm{pK}_{b}\) of \(\mathrm{NH}_{4} \mathrm{OH}\) )

The major product \((\mathrm{F})\) in the following reaction is

For the following carbocations the correct order of stability is

The area of the region enclosed between parabola \(y^{2}=x\) and the line \(y=m x\) is \(\frac{1}{48}\)
Then, the value of \(m\) is

The variance of first 20 natural numbers is

If \(\int \frac{d x}{(x+1)(x-2)(x-3)}=\frac{1}{k} \log _e\left\{\frac{|x-3|^3|x+1|}{(x-2)^4}\right\}+c\), then the value of \(k\) is

The correct order of the addition reaction rates of halogen acids with ethylene is

In aluminium extraction by the Bayer process, alumina is extracted from bauxite by sodium hydroxide at high temperature and pressures :
\(\mathrm{Al}_2 \mathrm{O}_3(\mathrm{~s})+2 \mathrm{OH}^{-}(\mathrm{aq}) \rightarrow 2 \mathrm{Al}_2 \mathrm{O}_2(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(1)\)

Solid impurities such as \(\mathrm{Fe}_2 \mathrm{O}_3\) and \(\mathrm{SiO}_2\) are removed and then \(\mathrm{Al}(\mathrm{OH})_4^{-}\)is reprecipitated : \(2 \mathrm{Al}(\mathrm{OH})_4^{-} \rightarrow \mathrm{Al}_2 \mathrm{O}_3 \cdot 3 \mathrm{H}_2 \mathrm{O}(\mathrm{s})+2 \mathrm{OH}^{-}\)(aq) . In the industrial world :

The basicity of aniline is weaker in comparison to that of methyl amine due to