Saturday, October 10, 2009

IIT-JEE-Chemistry-Final Revision Set No.70

1. 2-phenyl propene on acidic hydration gives

(a) 2-phenyl-2-propanol
(b) 2-phenyl-1-propanol
(c) 3-phenyl-1-propanol
(d) 1-phenyl-2-propanol

2. The methods chiefly used for the extraction of lead and tin from their ores
are respectively

(a) Self reduction and carbon reduction
(b) Self reduction and electrolytic reduction
(c) Carbon reduction and self reduction
(d) Cyanide process and carbon reduction

3. Benzamide on treatment with POCl3 gives

(a) Aniline
(b) Benzonitrile
(c) Chlorobenzene
(d) Benzyl amine

4. (NH4)2 Cr2O7 on heating gives a gas which is also given by

(a) Heating NH4NO2
(b) Heating NH4NO3
(c) Mg3N2 + H2O
(d) Na(comp.) + H2O2

5. HX is a weak acid (Kap =5). It forms a salt NaX (0.1M) on reacting with caustic soda. The degree of hydrolysis of NaX is

(a) 0.01 %
(b) 0.001 %
(c) 0.1 %
(d) 0.15%

Source: JEE 2004 screening

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