Question

Which of the following methods is generally used for preparing $Zn(N{O}_3{)}_2$ salt?

1 : Neutralisation - insoluble base & dilute acid

2 : Neutralisation - alkali & dilute acid

3 : Simple displacement - active metal & dilute acid

4 : Direct combination

5 : Precipitation [double decomposition]

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

Answer: (B)

3

Zinc metal with dilute nitric acid gives zinc nitrate.

So, simple displacement-active metal & dilute acid is the correct option for this.

$Zn+2HN{O}_3\to Zn(N{O}_3{)}_2+H_2$

Hence, the correct option is $\left(B\right)$.