When the same mass of Zn is treated separately with excess of and excess of NaOH

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

When the same mass of Zn is treated separately with excess of

H_2SO_4

and excess of NaOH, the ratio of volumes of

H_2

evolved is: (1) 1 : 1 (2) 1 : 2 (3) 2 : 1 (4) 9 : 4