Of the following alcohols, the one that would react fastest with conc. \(HCl\) and anhydrous \(ZnCl_{2}\) is,

The order of stability of the following tautomeric compounds is \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_2} = C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(I)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(II)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C = CH - C - C{H_3}} 
\end{array}}\limits_{(III)} \)

Given below are two statements: Statement \(I\): The boiling point of hydrides of Group \(16\) elements follow the order \(\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S}\). Statement \(II\): On the basis of molecular mass, \(\mathrm{H}_2 \mathrm{O}\) is expected to have lower boiling point than the othe members of the group but due to the presence of extensive \(\mathrm{H}\)-bonding in \(\mathrm{H}_2 \mathrm{O}\), it has higher boiling point. In the light of the above statements, choose the correct answer from the options given below:

The anion of acetylacetone \((acac)\) forms \(Co\, (acac)_3\) chelate with \(Co^{3+}.\) The rings of the chelate are

Consider the nitration of benzene using mixed conc. \(H_2SO_4\) and \(HNO_3. \) If a large amount of \(KHSO_4\) is added to the mixture, the rate of nitration will be

For a given exothermic reaction, \(K_p\) and \(K'_p\)  are the equilibrium constants at temperatures \(T_1\) and \(T_2,\) respectively. Assuming that heat of reaction is constant in temperature range between \(T_1\) and \(T_2,\) it is readily observed that

Match List - I with List - II

\(\text{List-I}\)	\(\text{List-II}\)
\(\text{A.}\) \(\text{XeO} _3\)	\(\text{I.}\) \(\text{sp} ^3 \text{d}\), linear
\(\text{B.}\) \(\text{XeF} _2\)	\(\text{II.}\) \(\text{sp} ^3\); pyramidal
\(\text{C.}\) \(\text{XeOF} _4\)	\(\text{III.}\) \(\text{sp} ^3 \text{d}^3\); distorted octahedral
\(\text{D.}\) \(\text{XeF} _6\)	\(\text{IV.}\) \(\text{sp} ^3 \text{d}^2\); square pyramidal

Choose the correct answer from the options given below:

In the electrochemical cell : \(Zn \,|\,ZnSO_4\,(0.01\,M)\,||\,CuSO_4\,(1.0\, M)\,|\,Cu,\) the \(emf\) of this Daniell cell is \(E_1.\) When the concentration of \(ZnSO_4\) is changed to \(1.0\, M\) and that of \(CuSO_4\) changed to \(0.01\, M,\) the \(emf\) changes to \(E_2.\) Fromthe followings, which one is the relationship between \(E_1\) and \(E_2\) ? (Given, \(RT/F = 0.059\))

Which one of the following statements about Histones is wrong?

Given below are two statements : Statement \(I\) : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Statement \(II\) : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes. In the light of above statements, choose the most appropriate answer from the options given below :

Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?

Choose the correct statement:

A hydrocarbon contains \(85.7\, \% C\). If \(42\, mg\) of the compound contains \(3.01 \times 10^{20}\) molecules, the molecular formula of the compound will be