All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2008 Chemistry

Q. 1. Which one of the following is the correct statement?

1. Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase.
2. B₂H₆.2NH₃ is known as 'inorganic benzene'.
3. Boric acid is a protonic acid.
4. Beryllium exhibits coordination number of six.

Sol: Becl₂ and Alcl₃ both have bridged structure in solid phase.
B₃N₃ H₆ is known as inorganic benzene.
Boric acid is Lewis acid.
Beryllium exhibits coordination number of 4

Q. 2.

Sol:

Q. 3. The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is

Sol: The correct decreasing order of priority for the functional group of organic compounds in the IUPAC system of nomenclature is:

Q. 4. The pK_a of a weak acid, HA is 4.80. The pK_b of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be

1. 7.01
2. 9.22
3. 9.58
4. 4.79

Sol: