List of top Chemistry Questions

For an isothermal reversible expansion process, the value of q can be calculated by the expression

P is

Among the following pairs of complexes, in which case the Δ₀ value is higher for the first one ?

If radiation corresponding to second line of 'Balmer series' of Li²⁺ ion, knocked out electron from first excited state of H-atom, then kinetic energy of ejected electron would be :

For the reaction taking place at certain temperature
NH₂COONH₄ (s) ⇌ 2NH₃ (g) +CO₂ (g)
If equilibrium pressure os 3X bar then Δ_tG° would be

The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol^-1, hence the energy of fourth Bohr orbit would be :

Flocculation value of BaCl₂ is much less than that of KCl for sol A and flocculation value of Na₂SO₄ is much less than that of NaBr for sol B. The correct statement among the following is :

0.5 mole of each H₂, SO₂ and CH₄ are kept in a container. A hole was made in the container. After 3h, the order of partial pressures in the container will be

The insecticide containing 99% γ -isomer of benzene hexachloride is know as

Following table represents critical temperature of some gases.
Arrange these gases in their increasing order of liquification

Gas	H2	He	N2	O2
Tc/K	33.2	5.3	126	154.3

Monomer is

Which of the following transformation requires least energy ?

Heavy water reacts respectively with CO₂, SO₃, P₂O₅ and N₂O₅ to give the compounds.

Among Al₂O₃, SiO₂, P₂O₅ and N₂O₅ to give the compounds :

In the first order reaction
2N₂O₅ → 4NO₂ + O₂. If a mol L^-1 is the initial concentration of N₂O₅, the concentration of NO₂ at time t will be

On adding AgNO³ solution into KI solution, a negatively charged colloidal sol is obtained when they are in :

[Cr(H₂O)₆]Cl₃ (atomic number of Cr=24) has a magnetic moment of 3.83 BM. The correct distribution of 3d-electrions in the chromium present in the complex is

Which of the following have maximum lattice energy :

Heating vitamin B₂ then colour will be :

Oxide ion form H.C.P. lattice & Al³⁺ Occupies \(\frac{2}{3}\) of octahedral void then find the formula of compound :

Which of the following is the component of CsI₃ lattice :

A atom form F.C.C. lattice with density d = 8.92 gm/ml and edge length a=3.6 × 10^-8 cm then find the molecular mass of atom in a.m.u. ?

Formula of plaster of paris :

Which is amphoteric :

If Molar conductivity of Ca²⁺ =119 & Molar conductivity of Cl^- = 71 then find the molar conductivity of CaCl₂ :