Chemistry Test ...

Scuba divers may experience a condition called ______. 

To avoids this, the tanks used by scuba divers are filled with air diluted with.

Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to

Liquid ammonia bottles are opened after cooling them in ice for sometime. It is because liquid NH₃

One mole of calcium phosphide on reaction with excess water gives

The plot of concentration of the reactant vs time for a reaction is a straight line with a negative slope. The reaction follows a rate equation

In one molal solution that contains 0.5 mole of a solute, there is

The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is : [At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]

The freezing point depression constant (K_f) of benzene is 5.12Kkgmol⁻¹. The freezing point depression for the solution of molality 0.078m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places) :

The mixture that forms maximum boiling azeotrope is

In water saturated air, the mole fraction of water vapour is 0.02. If the total pressure of the saturated air is 1.2 atm, the partial pressure of dry air is