List of top Chemistry Questions

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

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

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

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 :

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

Which one of the following species has plane triangular shape?

Which of the following molecules has the maximum dipole moment?

Which of the following statements is correct for the spontaneous adsorption of a gas?

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

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

Artificial sweetener which is stable under cold conditions only is:

Which of the following complexes is used to be as an anticancer agent?

Reason of lanthanoid contraction is:

When 0.1 mol MnO₄^2– is oxidised the quantity of electricity required to completely oxidise MnO4^2– to MnO₄^– is

Among the following sets of reactants which one produces anisole ?

The weight of silver (at wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O₂ at STP will be:

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:

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)

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:

(a) \(H_2O_2 + O_3 → H_2O + 2O_2\)
(b) \(H_2O_2 + Ag_2O → 2Ag + H_2O + O_2\)
Role of hydrogen peroxide in the above reactions is respectively:

Which one of the following is an example of a thermosetting polymer?

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

The pair of compounds that can exist together is: