List of top Chemistry Questions

What happens when an inert gas is added to an equilibrium keeping volume unchanged ?

If $m$ and $e$ are the mass and charge of the revolving electron in the orbit of radius $r$ for hydrogen atom, the total energy of the revolving electron will be :

The total number of octahedral void(s) per atom present in a cubic close packec structure is :-

The most suitable reagent for the conversion of $RCH_2OH \to RCHO$ is

In the Victor-Meyer's test, the colour given by $1^{\circ}$, $2^{\circ}$and $3^{\circ}$ alcohols are respectively :

For the compounds $CH_3Cl, \, CH_3Br,\,CH_3I$ and $CH_3F,$ the correct order of increasing $C$-halogen bond length is :

Tischenko reaction is a modification of :

Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is:

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂ (g), each at S.T.P., the moles of HCl (g) formed is equal to :

Equal masses of H₂, O₂ and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H₂ : O₂ : methane would be :

Among the following sets of reactants which one produces anisole ?

For the reversible reaction :
\(N_2(g) + 3H_2(g) ⇋ 2NH_3(g) + \text {Heat}\)
The equilibrium shifts in forward direction :

Which one of the following species has plane triangular shape?

Which of the following molecules has the maximum dipole moment?

D(+) glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:

What is the maximum number of orbitals that can be identified with the following quantum number?
n = 3, l = 1, m_l = 0

Calculate the energy in joule corresponding to light of wavelength 45 nm:
(Planck’s constant h = 6.63 × 10^-34 Js; speed of light c = 3 × 10⁸ ms^-1)

For a given exothermic reaction, K_p and K'_P are the equilibrium constants at temperatures T₁ and T₂, respectively. Assuming that heat of reaction is constant in temperature range between T₁ and T₂, it is readily observed that:

Which one is most reactive towards Nucleophilic addition reaction?

\(Be^{2+}\) is isoelectronic with which of the following ions?

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 gm of sample neutralized 10 mL of 1 M H₂SO₄, The percentage of nitrogen in the soil is:

Acidity of diprotic acids in aqueous solutions increases in the order:

Which property of colloids isnot dependent on the charge on colloidal particles?

If a is the length of the side of a cube , the distance between the body centred atom and one corner atom in the cube will be