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Here is the exam paper

Which one of the following is the correct statement?
i. Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase.
ii. B2H6.2NH3 is known as 'inorganic benzene'.
iii. Boric acid is a protonic acid.
iv. Beryllium exhibits coordination number of six.

The pKa of a weak acid, HA is 4.80. The pKb of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be
i. 7.01
ii. 9.22
iii. 9.58
iv. 4.79

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is
i. R2SiCl2
ii. R3SiCl
iii. R4Si
iv. RSiCl3

Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
i. p-nitrophenol
ii. nitrobenzene
iii. 2,4,6-trinitrobenzene
iv. o-nitrophenol




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ISAT Entrance Exam paper.pdf (216.6 KB, 72 views)