question_answer 47)

  A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in figure. On the basis of this mark the correct option. (a) Average rate upto 40 s is (b) Average rate upto 40 s is   (c) Average rate upto 40 s is (d) Average rate upto 40 s is

Answer:

                  (c)