Question

Which of the following is not a salt?

• A. Slaked Lime
• B. Zinc Nitrate
• C. Lead Sulphite
• D. Sodium Chloride

Answer 1

The correct option is A

Slaked Lime

Explanation for correct option

(A)Slaked Lime

Salt

• When an acid reacts with a base, a material called salt is formed.
• A salt is made up of a base's positive ion (cation) and an acid's negative ion (anion).

Slaked Lime

• The formula for slaked lime is $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$.
• It is calcium hydroxide.
• It is a base.

Explanation for incorrect option

(B)

• Zinc Nitrate$\left(\mathrm{Zn}{\left({\mathrm{NO}}_3\right)}_2\right)$ is a salt of $\mathrm{Zn}{\left(\mathrm{OH}\right)}_2$, and ${\mathrm{HNO}}_3$.

(C)

• Lead sulphate${\mathrm{PbSO}}_4$ is a salt of $\text{Pb}{\left(\mathrm{OH}\right)}_2$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$

(D)

• Sodium chloride$\left(\mathrm{NaCl}\right)$ is a salt.
• It is a salt of sodium hydroxide$\left(\mathrm{NaOH}\right)$, and Hydrogen chloride$\left(\mathrm{HCl}\right)$.
• Hence, options (B), (C), and (D) are incorrect.

Hence, option (A) is correct. Slaked lime is not a salt.