Bubbles of hydrogen gas formed stick to the surface of the metal
A. (i) and (iv)
B. (ii) and (iii)
C. (i) and (ii)
D. (iii) and (iv)
Answer:D
Bubbles of hydrogen gas formed stick to the surface of the metal
A. (i) and (iv) B. (ii) and (iii) C. (i) and (ii) D. (iii) and (iv)