List of top Chemistry Questions

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

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

Among the following sets of reactants which one produces anisole ?

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:

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

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

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:

Which one is most reactive towards Nucleophilic addition reaction?

Artificial sweetener which is stable under cold conditions only 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:

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)

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

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

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

The pair of compounds that can exist together is:

Reason of lanthanoid contraction is:

Which of the following organic compounds has same hybridization as its combustion product CO2 ?

Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)

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

Which one of the following is not a commoncomponent of Photochemical Smog?

1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg =24; O=16)

Which of the following orders of ionic radii is correctly represented?

What products are formed when the following compound is treated with Br₂ in the presence of FeBr₃?

Which of the following compounds will undergo racemisation when solution of KOH hydrolysis?