VITEEE Chemistry Sample Questions

Q. 1. 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.

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

Q2. Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
i. Metal sulphides are less stable than the corresponding oxides.
ii. CO2is more volatile than CS2.
iii. Metal sulphides are thermodynamically more stable than CS2.
iv. CO2is thermodynamically more stable than CS2.

Q3.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

Q4. Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotized and then heated with cuprous bromide. The reaction mixture so formed contains
i. mixture of o-; and p-bromoanilines
ii. mixture of o- and m-bromotoluenes
iii. mixture of o- and p-bromotoluenes
iv. mixture of o- and p-dibromobenzenes
iv. o-nitrophenol

Q5. At 800C, the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liquid ‘B’ is 1000 mm Hg. If a
mixture solution of ‘A’ and ‘B’ boils at 800C and 1 atm pressure, the amount of ‘A’ in the mixture is (1 atm = 760 mm
i. 48 mol percent
ii. 50 mol percent
iii. 52 mol percent
iv. 34 mol percent

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