Chemistry Test ...

If 0.5 g of a solute (molar mass 100 g mol^-1) in 25 g of solvent elevates the boiling point by 1 K. The molar boiling point constant of the solvent is

Van't Hoff factor of Ca(NO₃)₂ is

Which of the following aqueous solutions will have the lowest vapour pressure at room temperature?

Suppose that a sample of 100 g of water contains 0.025 g of chlorine. The concentration of chlorine in ppm will be

If 18 g of glucose is added to 178.2 g of water, then the vapour pressure of water for this aqueous solution at 100^oC is

In case of a buffer solution containing equimolar amount of ammonium hydroxide and ammonium chloride, the reserve basicity of the solution is due to the presence of

Acidic buffer solution is produced on mixing the aqueous solutions of

A 0.1 M aqueous solution of a weak acid is 2% ionised. If the ionic product of water is 1 x 10^-14 mol² dm^-6, then [OH^-] is

When 10^-6 mole of a mono basic strong acid is dissolved in 1 litre of the solvent, its pH is

If the concentration of [Ag⁺] = 10^-5 in a solution, then the concentration of [Cl^-] required for the precipitation of AgCl (Ksp = 2 10^-12) is

The oxidation state of sulphur in Na₂S4O₆ is

The amount of Zn required to produce 224 ml of H₂ at STP on treatment with dilute H₂SO₄ will be

The oxidation potential values of A, B, C and D are -0.03 V, +0.108 V, -0.07 V and +0.1 V, respectively. The non-spontaneous cell reaction takes place between

In which of the following reactions does H₂O₂ act as a reducing agent?

For Zn²⁺/Zn = - 0.76 V, Cl₂/Cl^- = 1.36 V, H⁺/ (1/2)H₂ = 0 V and Fe³⁺/Fe²⁺ = 0.77 V, the increasing order of strengths as a reducing agent is