Which of the following are isostructural pairs ? \(A.\) \(SO _{4}^{2-}\) and \(CrO _{4}^{2-}\) \(B.\) \(SiCl _{4}\) and \(TiCl _{4}\) \(C.\) \(NH _{3}\) and \(NO _{3}^{-}\) \(D.\) \(BCl _{3}\) and \(BrCl _{3}\) \(BCl _{3}\) and \(BrCl _{3}\)

Sulphur \((S)\) containing amino acids from the following are: \((a)\) isoleucine \((b)\) cysteine \((c)\) lysine \((d)\) methionine \((e)\) glutamic acid

On a thin layer chromatographic plate, an organic compound moved by \(3.5 \mathrm{~cm}\), while the solvent moved by \(5 \mathrm{~cm}\). The retardation factor of the organic compound is _______ \(\times 10^{-1}\)

0.1 M solution of KI reacts with excess of \(\mathrm{H}_2 \mathrm{SO}_4\) and \(\mathrm{KIO}_3\) solutions. According to equation
\(5 \mathrm{I}^{-}+\mathrm{IO}_3^{-}+6 \mathrm{H}^{+} \rightarrow 3 \mathrm{I}_2+3 \mathrm{H}_2 \mathrm{O}\)

Identify the correct statements :
(A) 200 mL of KI solution reacts with 0.004 mol of \(\mathrm{KIO}_3\)
(B) 200 mL of KI solution reacts with 0.006 mol of \(\mathrm{H}_2 \mathrm{SO}_4\)
(C) 0.5 L of KI solution produced 0.005 mol of \(\mathrm{I}_2\)
(D) Equivalent weight of \(\mathrm{KIO}_3\) is equal to ( \(\frac{\text { Molecular weight }}{5}\) )

Choose the correct answer from the options given below :

A hydrocarbon ' \(X\) ' with formula \(C _6 H _8\) uses two moles of \(H _2\) on catalytic hydrogenation of its one mole. On ozonolysis, ' \(X\) ' yields two moles of methane dicarbaldehyde. The hydrocarbon ' \(X\) ' is :

The observed and normal molar masses of compound \(\mathrm{MX}_2\) are 65.6 and 164 respectively. The percent degree of ionisation of \(\mathrm{MX}_2\) is _______ %. (Nearest integer)

\(Emf\) of the following cell at \(298 \,K\) in \(V\) is \(x \times 10^{-2} . Zn \left| Zn ^{2+}(0.1\, M ) \| Ag ^{+}(0.01 \,M )\right| Ag\) The value of \(x\) is .... . (Rounded off to the nearest integer) [Given \(: E_{Z n^{+2}/Z_{n}}^{0}=-0.76 \,V ; E _{A g^{+} / A_{ g }}^{0}=+0.80 \,V ; \frac{2.303 RT }{ F }=0.059\)]

Lithium aluminium hydride reacts with silicon tetrachloride to form

A body cools in \(7\) minutes from \(60^{\circ}\,C\) to \(40^{\circ}\,C\). The temperature of the surrounding is \(10^{\circ}\,C\). The temperature of the body after the next \(7\) minutes will be

The vector \(\vec{a}=-\hat{i}+2 \hat{j}+\hat{k}\) is rotated through a right angle, passing through the \(y\)-axis in its way and the resulting vector is \(\vec{b}\). Then the projection of \(3 \vec{a}+\sqrt{2} \vec{b}\) on \(\vec{c}=5 \hat{i}+4 \hat{j}+3 \hat{k}\) is

From the \(v\) - \(t\) graph shown. the ratio of distance to displacement in \(25\,s\) of motion

A point charge causes an electric flux of \(-2 \times 10^4 \mathrm{Nm}^2 \mathrm{C}^{-1}\) to pass through a spherical Gaussian surface of 8.0 cm radius, centred on the charge. The value of the point charge is :
(Given \(\epsilon_0=8.85 \times 10^{-12} \mathrm{C}^2 \mathrm{~N}^{-1} \mathrm{~m}^{-2}\) )

Given below are two statements: One is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A:\) For measuring the potential difference across a resistance of \(600\,\Omega\), the voltmeter with resistance \(1000\,\Omega\) will be preferred over voltmeter with resistance \(4000\,\Omega\). Reason \(R:\) Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance. In the light of the above statements, choose the most appropriate answer from the options given below.