AIEEE 2005

Heating an aqueous solution of aluminium chloride to dryness will give :

The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous
acid is :

In silicon dioxide :

The structure of diborane (B2H6) contains :

The correct order of the thermal stability of hydrogen halides (H – X) is :

In which of the following arrangements the order is NOT according to the property
indicated against it?

Which of the following oxides is amphoteric in character?

Which of the following is fully fluorinated polymer?

Which of the following is a polyamide?

Based on lattice energy and other considerations which one of the following alkali
metal chlorides is expected to have the highest melting point :

An ionic compound has a unit cell consisting of A ions at the corners of a cube and B
ions on the centres of the faces of the cube. The empirical formula for this compound
would be :

Benzene and toluene form nearly ideal solutions. At 20 oC, the vapour pressure of
benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of
benzene at 20 oC for a solution containing 78 g of benzene and 46 g of tolue...

If \(\alpha\) is the degree of dissociation of Na2SO4, the vant Hoff’s factor (i) used for
calculating the molecular mass is :

Equimolar solutions in the same solvent have

Two solutions of a substance (non electrolyte) are mixed in the following manner. 480 ml of 1.5 M first solution + 520 ml of 1.2 M second solution. What is the molarity of the final mixture?

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of the substance will

In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields?
(A) n = 1, l = 0, m = 0
(B) n = 2, l = 0, m = 0
(C) n = 2, l = 1, m =...

Of the following sets which one does NOT contain isoelectronic species?

Pick out the isoelectronic structure from the following :
$$\eqalign{
& \left( i \right)\,\,\,\,\,\,C{H_3}^ + \cr
& \left( {ii} \right)\,\,\,\,{H_3}{O^ + } \cr
& \left( {iii} \right)\,\,\,N{H_3} \cr
& \left( {iv} \right)\,\,...

The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and
negatively charged, respectively, which of the following statements is NOT correct?

The volume of a colloidal particle, VC as compared to the volume of a solute particle
in a true solution VS, could be

Consider the reaction: N2 + 3H2 \(\to\) 2NH3 carried out at constant temperature and
pressure. If \(\Delta H\) and \(\Delta U\) are the enthalpy and internal energy changes for the
reaction, which of the following expressions is true?

Consider an endothermic reaction, X \(\to\) Y with the activation energies Eb and Ef
for the backward and forward reactions, respectively. In general :

If the bond dissociation energies of XY, X2 and Y2 (all diatomic molecules) are in the ratio of 1:1:0.5 and \(\Delta H_f\) for the formation of XY is -200 kJ mole-1. The bond
dissociation energy of X2 will be :