• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

How many of the following statements are incorrect

I) Sea water freezes at a lower temperature than pure water

II) Boiling point of sea water increases as it evaporates

III) Sea water boils at a lower temperature than fresh water

IV) Density of sea water at STP is same as that of fresh water

V) Half life is 50% of the total time taken for the completion of a reaction.

VI) Collision frequency (Z), which is the number of collisions per second per unit volume, is same as the rate constant of the reaction

VII) A change in the activation energy of a reaction at a particular temperature will result in a proportional change in the rate and rate constant of the reaction at the same temperature.

VIII) All first order reactions are not unimolecular

IX) For a zero order reaction, slope of a plot of t1/2 vs initial concentration will be zero.

Ans.

(6)

3, 4, 5, 6, 7, 9