When the same amount of zinc is treated separately with excess of sulphric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is

When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volumes of hydrogen evolved is (a)1:1 (b)1:2 (c)2:1 (d) 9:4

When the same amount of zinc is treated separately with excess of sulphuric acid and sodium hydroxide, the ratio of volumes of hydrogen evolved is:

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution, the ratio of volumes of hydrogen evolved is: