List of top Chemistry Questions

For a cell reaction involving two electron changes, ${E^{\circ}_{cell} = 0.3 \, V}$ at $ 25^{\circ} C$. The equilibrium constant of the reaction is

For an ideal gas, compressibility factor is

Which of the following reactions is a redox reaction

For the reaction $H _{2}( g )+ Br _{2}( g ) \rightarrow 2 HBr ( g )$, the experiment data suggested that $r = k \left[ H _{2}\right]\left[ Br _{2}\right]^{1 / 2} .$ The molecularity and order of the reaction are respectively:

Correct formula of the complex formed in the brown ring test for nitrates is

Which of the following does not contain Plane of symmetry?

The total number of pair of enantiomers possible with molecular formula C$_5$H$_{12}$O is ..............

For a reaction 2A + B → C + D, if rate of consumption of A is 0.1 mol L$^{-1}$ s$^{-1}$, the rate of production of C (in mol L$^{-1}$ s$^{-1}$) is ...........

A vessel contains a mixture of H$_2$ and N$_2$ gas. The density of this gas mixture is 0.2 g L$^{-1}$ at 300 K and 1 atm. Assuming ideal gas behavior, the mole fraction of N$_2$ (g) in the vessel is ______ (final answer to two decimals).

At 298 K and 1 atm, the molar enthalpies of combustion of cyclopropane and propene are −2091 kJ mol$^{-1}$ and −2058 kJ mol$^{-1}$, respectively. The enthalpy change (in kJ mol$^{-1}$) for the conversion of one mole of propene to one mole of cyclopropane is ..............

Among the following, the number of aromatic compound(s) is .............

The number of reducing sugars among the following is ..........

The following conversion is an example of

In the following reactions, the major products E and F, respectively, are
\[ \text{(i) NaOH/CO}_2,\; 125^\circ\text{C},\; 4–7\; \text{atm} \quad\quad \text{(ii) H}_3\text{O}^+ \quad\quad \longrightarrow E \quad\quad \text{(CH}_3\text{CO)}_2\text{O} \longrightarrow F \]

The following conversion is carried out using

In the following reaction, the major product T is
\[ \text{(i) NaOMe} \quad \text{(ii) H}_3\text{O}^+, \text{reflux} \quad \text{(iii) Polyphosphoric acid} \]

The major product S of the following reaction is

The product R in the following reaction is

The correct set of reagents for the following conversion is

The number of proton NMR signals for the compounds P and Q, respectively, is

Among the following compounds, the pair of enantiomers is

In a typical conductometric titration of a strong acid with a weak base, the curve resembles
(Conductance vs volume of base graphs as shown in the question)

In the following sequence of reactions, the overall yield (%) of O is

The correct order of rate of solvolysis for the following compounds is