\(100\, \mathrm{~mL}\) of \(\mathrm{Na}_{3} \mathrm{PO}_{4}\) solution contains \(3.45\, \mathrm{~g}\) of sodium. The molarity of the solution is \(.....\times 10^{-2}\) \(\operatorname{mol} \,\mathrm{L}^{-1} \cdot(\) Nearest integer \()\) [Atomic Masses - \(\mathrm{Na}: 23.0\, \mathrm{u}, \mathrm{O}: 16.0\, \mathrm{u}, \mathrm{P}: 31.0 \,\mathrm{u}]\)

The number of \(sp^2\) hybridised carbons present in "Aspartame" is

The osmotic pressure of blood is \(7.47\, bar\) at \(300\, K\). To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration of glucose solution in \(g\,L ^{-1}\) is \(......\) (Molar mass of glucose \(=180 \,g\, mol ^{-1}\) \(R =0.083\, L\) bar \(K ^{-1} \,mol ^{-1}\) ) (Nearest integer)

The number of bridged oxygen atoms present in compound \(B\) formed from the following reactions is \(Pb \left( NO _{3}\right)_{2} \stackrel{673 K }{\longrightarrow} A + PbO + O _{2}\) \(A \stackrel{\text { Dimerise }}{\longrightarrow} B\)

\(2\)-chlorobutane \(+\mathrm{Cl}_2 \rightarrow \mathrm{C}_4 \mathrm{H}_8 \mathrm{Cl}_2\) (isomers) Total number of optically active isomers shown by \(\mathrm{C}_4 \mathrm{H}_8 \mathrm{Cl}_2\), obtained in the above reaction 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 ?

If \(75 \%\) of a first order reaction was completed in \(90\) minutes, \(60 \%\) of the same reaction would be completed in approximately (in minutes).......... (Take: \(\log 2=0.30 ; \log 2.5=0.40)\)

\(9.3 \mathrm{~g}\) of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is _________\(100 \%\) completed is \(\times 10^{-1} \mathrm{~g}\). (Given molar mass in \(\mathrm{g} \mathrm{mol}^{-1} \mathrm{~N}: 14, \mathrm{O}: 16, \mathrm{C}\) : \(12, \mathrm{H}: 1)\)

10 mole of an ideal gas is undergoing the process shown in the figure. The heat involved in the process from \(P _1\) to \(P _2\) is \(\alpha\) Joule \(\left( P _1=21.7 Pa\right.\) and \(\left.P _2=30 Pa, C _{ v }=21 J / K . mol , R=8.3 J / mol . K \right)\). The value of \(\alpha\) is _________ .

The angle of projection for a projectile to have same horizontal range and maximum height is _______.

The major product obtained in the following reaction is :

Space between the plates of a parallel plate capacitor of plate area \(4 \mathrm{~cm}^2\) and separation of (d) 1.77 mm, is filled with uniform dielectric materials with dielectric constants (3 and 5) as shown in figure. Another capacitor of capacitance 7.5 pF is connected in parallel with it. The effective capacitance of this combination is ________ pF. \(\left(\right.\) Given \(\left.\varepsilon_0=8.85 \times 10^{-12} \mathrm{~F} / \mathrm{m}\right)\)

Which of the following are aromatic?