Saturday, October 3, 2009

IIT JEE Chemistry Final Revision Set 21

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. Benzamide on treatment with POCl3 gives
(a) Aniline (b) Benzonitrile (c) Chlorobenzene (d) Benzyl amine

3. 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

4. (NH4)2Cr2O7 on heating gives a gas which is also given by
(a) Heating NH4NO2 (b) Heating NH4NO3 (c) Mg3N2 + H2O (d) Na(comp.) + H2O2

5. Spontaneous adsorption of a gas on solid surface is an exothermic process because:
(a)ΔH increases for system (b)ΔS increases for gas
(c)ΔS decreases for gas (d)ΔG increases for gas

JEE 2004 screening

No comments: