The \(IUPAC\) name of ethylidene chloride is ..... .

Which of the following compounds is metallic and ferromagnetic ?

An analyst wants to convert. \(1 L\,HCl\) of \(pH =1\) to a solution of \(HCl\) of \(pH 2\). The volume of water needed to do this dilution is \(......\,mL\). (Nearest Integer)

In the reaction of formation of sulphur trioxide by contact process \(2S{O_2} + {O_2} \rightleftharpoons 2S{O_3}\) the rate of reaction was measured as \(\frac{{d\left[ {{O_2}} \right]}}{{dt}} =  - 2.5 \times {10^{ - 4}}\,mol\,{L^{ - 1}}\,{s^{ - 1}}\) . The rate of reaction is terms of \([SO_2]\) in \(mol\,L^{- 1}\, s^{-1}\) will be:

Decarboxylation of all six possible forms of diaminobenzoic acids \(C _{6} H _{3}\left( NH _{2}\right)_{2} COOH\) yields three products \(A , B\) and \(C\). Three acids give a product \('A',\) two acids gives a product \('B'\) and one acid give a product \('C'.\) The melting point of product \('C'\) is .....\(^{\circ} C\).

The molar heat capacity for an ideal gas at constant pressure is \(20.785\,J\,K ^{-1}\,mol ^{-1}\). The change in internal energy is \(5000\,J\) upon heating it from \(300\,K\) to \(500\,K\). The number of moles of the gas at constant volume is [Nearest integer] (Given: \(R =8.314\,J\,K ^{-1}\,mol ^{-1}\))

Time required for completion of \(99.9 \%\) of a First order reaction is_________ times of half life \(\left(\mathrm{t}_{1 / 2}\right)\) of the reaction.

The system of linear equations
\( x+y+z=6\),
\(2x+5y+az=36\),
\(x+2y+3z=b \) has:

Which of the following compound has a \(P-P\) bond ?

Let \(y=y(x)\) be solution of the differential equation \(\log _{e}\left(\frac{d y}{d x}\right)=3 x+4 y\), with \(y(0)=0\). If \(y\left(-\frac{2}{3} \log _{e} 2\right)=\alpha \log _{e} 2\), then the value of \(\alpha\) is equal to:

Considering acetic acid dissociates in water, its dissociation constant is \(6.25 \times 10^{-5}\). If \(5 \mathrm{~mL}\) of acetic acid is dissolved in \(1\) litre water, the solution will freeze at \(-\mathrm{x} \times 10^{-2}{ }^{\circ} \mathrm{C}\), provided pure water freezes at \(0^{\circ} \mathrm{C}\). \(\mathrm{x}=\) _______ (Nearest integer) Given : \(\left(\mathrm{K}_{\mathrm{r}}\right)_{\text {water }}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\). density of acetic acid is \(1.2 \mathrm{~g} \mathrm{~mol}^{-1}\) molar mass of water \(=18 \mathrm{~g} \mathrm{~mol}^{-1}\). molar mass of acetic acid \(=60 \mathrm{~g} \mathrm{~mol}^{-1}\). density of water \(=1 \mathrm{~g} \mathrm{~cm}^{-3}\) Acetic acid dissociates as \(\mathrm{CH}_3 \mathrm{COOH} \rightleftharpoons \mathrm{CH}_3 \mathrm{COO}^{\oplus}+\mathrm{H}^{\oplus}\)

The intensity of the light from a bulb incident on a surface is \(0.22 \,W / m ^{2}\). The amplitude of the magnetic field in this light-wave is_______ \(\times 10^{-9} \,T\). (Given : Permittivity of vacuum \(\epsilon_{0}=8.85 \times 10^{-12} \,C ^{2} N ^{-1} m ^{-2}\), speed of light in vacuum \(c =3 \times 10^{8} \,ms ^{-1}\) )

A nucleus of mass \(M\) at rest splits into two parts having masses \(\frac{M^{\prime}}{3}\) and \(\frac{2 M^{\prime}}{3}\left(M^{\prime} < M\right)\). The ratio of de Broglie wavelength of two parts will be.