Question

Which of the following metals liberate hydrogen with 5% HNO₃?

(i) Cu

(ii) Zn

(iii) Mn

(iv) Mg

विकल्प

• (i) and (ii)

• (ii) and (iii)

• (iii) and (iv)

• (i) and (iv)

Answer 1

(iii) and (iv)