In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

A group \(15\) element, which is a metal and forms a hydride with strongest reducing power among group \(15\) hydrides. The element is

The electrode potential of the following half cell at \(298\,K\) \(X \left| X ^{2+}(0.001 M ) \| Y ^{2+}(0.01 M )\right| Y\) is \(.......\times 10^{-2} V\) (Nearest integer). Given: \(E _{ x ^{2+} \mid x }^0=-2.36\,V\) \(E _{ Y ^{3+} \mid Y }^0=+0.36\,V\) \(\frac{2.303\,RT }{ F }=0.06\,V\)

For a reaction, \(\mathrm{N}_2 \mathrm{O}_{5(\mathrm{~g})} \rightarrow 2 \mathrm{NO}_{2(\mathrm{~g})}+\frac{1}{2} \mathrm{O}_{2(\mathrm{~g})}\) in a constant volume container, no products were present initially. The final pressure of the system when \(50 \%\) of reaction gets completed is _______.

It has been found that for a chemical reaction with rise in temperature by \(9\, K\) the rate constant gets doubled. Assuming a reaction to be occurring at \(300\, K\), the value of activation energy is found to be \(......\,k\,J \,mol ^{-1}\). [nearest integer] (Given \(\ln 10=2.3, R =8.3 JK ^{-1} mol ^{-1}, \log 2=0.30\) )

Number of \(\mathrm{Cl}=\mathrm{O}\) bonds in chlorous acid, chloric acid and perchloric acid respectively are :

The number of isoelectronic species among \(Sc^{3+}\), \(Cr^{2+}\), \(Mn^{3+}\), \(Co^{3+}\) and \(Fe^{3+}\) is 'n'. If 'n' moles of AgCl is formed during the reaction of complex with formula \(CoCl_{3}(en)_{2}NH_{3}\) with excess of \(AgNO_{3}\), then the number of electrons present in the \(t_{2g}\) orbital of the complex is __________ .

A body projected vertically upwards with a certain speed from the top of a tower reaches the ground in \(t_1\). If it is projected vertically downwards from the same point with the same speed, it reaches the ground in \(t_2\). Time required to reach the ground, if it is dropped from the top of the tower, is _______.

If \(0 < a , b < 1,\) and \(\tan ^{-1} a +\tan ^{-1} b =\frac{\pi}{4},\) then the value of \((a+b)-\left(\frac{a^{2}+b^{2}}{2}\right)+\left(\frac{a^{3}+b^{3}}{3}\right)-\left(\frac{a^{4}+b^{4}}{4}\right)+\ldots\) is ..... .

The value of \(\frac{8}{\pi} \int \limits_0^{\frac{\pi}{2}} \frac{(\cos x)^{2023}}{(\sin x)^{2023}+(\cos x)^{2023}} d x\) is \(.............\).

A circle touching the \(x-\) axis at \((3, 0)\) and making an intercept of length \(8\) on the \(y-\) axis passes through the point 

A solution containing \(62\,g\) ethylene glycol in \(250\,g\) water is cooled to \(-10\,^oC. \) If \(K_f\) for water is \(1.86\,K\,kg\,mol^{-1},\) the amount of water(in \(g\) ) separated as ice is

Consider the following reactions \((a)\;\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCH}(\mathrm{OH}) \mathrm{CH}_{3} \stackrel{\mathrm{conc.H}, \mathrm{SO}_{4}}{\longrightarrow}\) \((b)\;\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}(\mathrm{Br}) \mathrm{CH}_{3} \stackrel{\text { alc.KOH }}{\longrightarrow}\) \((c)\;\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}(\mathrm{Br}) \mathrm{CH}_{3} \xrightarrow[\text { It should be }\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CO}^{-} \mathrm{K}^{+}]{\text { given by } \mathrm{NTA}\left(\mathrm{CH}_{3}\right)_{3} \mathrm{O}^{-} \mathrm{K}^{+}}\) \((d)\;\begin{array}{*{20}{c}}
  {{{(C{H_3})}_2}C - C{H_2} - CHO} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}\xrightarrow{\Delta }\) Which of these reaction(s) will not produce Saytzeff product ?