List of top Chemistry Questions

An example of a reversible reaction is

The compound that is not a Lewis acid is

The compound that will not give iodoform on treatment with alkali and iodine is

The compound that is most reactive towards electrophilic substitution is

Hydrogen gas will not reduce

Acidic hydrogen is present in

Molecular formula of Glauber's salt is

Nitrogen dioxide cannot be obtained by heating

The oxide that gives $ H_2O_2 $ on treatment with a dilute acid is

Electromagnetic radiation with maximum wavelength is

Rate of diffusion of a gas is

A gas that cannot be collected over water is

The electric charge for electrode deposition of one gram equivalent of a substance is

On hybridisation of one s and one p-orbital we get

Chlorobenzene can be prepared by reacting aniline with

Equal weights of methane and hydrogen are mixed in an empty container at $25^\circ$ C The fraction of the total pressure exerted by hydrogen is

An isotone of $^{76}_{32}Ge$ is

The IUPAC name of the compound having the formula is

A certain buffer solution contains equal concentration of $ X^-$ and $HX$. The $K_h$ for $X^- \, is \, 10^{ - 19 } $ . The pH of the buffer is

For the gas phase reaction, $ C_2 H_4 + H_2 \rightleftharpoons C_2 H_6 $ $ \hspace15mm$ $ ( \triangle H = - 32.7 \, kcal )$ carried out in a vessel, the equilibrium concentration of $ C_2H_4$ can be increased by

A certain weak acid has a dissociation constant of $1.0 \times 10^{ - 4 }$. The equilibrium constant for its reaction with a strong base is

The radiation from a naturally occurring radioactive substance, as seen after deflection by a magnet in one direction, are

Which of the following compounds will give a yellow precipitate with iodine and alkali ?

Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon?

Base catalysed aldol condensation occurs with