IIT JEE Chemistry Final Revision Set 24

1. ΔH_vap = 30 kJ/mol and ΔS_vap = 75Jmol^-1 K^-1 . The temperature ofthe vapour, at one atmosphere is going to be:
(a) 400 K (b) 350 K (c) 298 K (d) 250 K

2. Spin only magnetic moment of the compound Hg[Co(SCN)4] is
(a) √3 (b) √15 (c) √24 (d) √8



3. The treatment of CH3OH with CH3MgI releases 1.04 mL of a gas at STP. The mass of CH3OH
added is :
(a) 1.49 mg (b) 2.98 mg (c) 3.71 mg (d) 4.47 mg .

4. The addition of HBr to an alkene in the presence of peroxide is the example of
(a) electrophilic addition reaction
(b) nucleophilic addition reaction
(c) free radical addition reaction
(d) the formation of carbocation as an intermediate


5. The addition of Br2 to trans-2-butene produces
(a) (+)-2,3-dibromobutane (b) (-)-2,3-dibromobutane
(c) rac-2,3-dibromobutane (d) meso-2,3-dibromobutane