AIPMT 2005 Preliminary Answer Key - Free Neet Mock Test

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

A solution has a 1 : 4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at 20°C are 440 mm of Hg for pentane and 120 mm of Hg for hexane. The mole fraction of pentane in the vapour phase would be :

4.5g of aluminium (at. mass 27 amu) is deposited at cathode from Al3+ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions in solution by the same quantity of electric charge will be :

The best method for the separation of naphthalene and benzoic acid from their mixture is :

The mole fraction of the solute in one molal aqueous solution is :