IIT-JEE Exam

For a dilute solution containing 2.5 g of a non- volatile non- electrolyte solute in 100 g of water, the elevation in boiling point at 1 atm pressure is 2ºC. Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure (mm of Hg) of the solution is (take Kb = 0.76 K kg mol–1)
option
(A) 724
(B) 740
(C) 736
(D)718

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IIT-JEE Other Question
The shape of XeF4 molecule is
option
(A) trigonal bipyramidal
(B) square plannar
(C) tetrahedral
(D) see-saw 25mL of household bleach solution was mixed with 30mL of 0.50MKI and 10mL of 4N acetic acid. In the titration of the liberated iodine, 48mL of 0.25 N Na2S2O3was used to reach the end point. Themolarity of the
household bleach solution is
option
(A) 0.48 M
(B) 0.96 M
(C) 0.24 M
(D) 0.024 M