Manipur Board Solutions for Chapter: Acids, Bases and Salt, Exercise 3: Let us answer these

Two metallic compounds A and B react separately with acid to form salt and water. Compound A also produces an effervescence. What could be A and B?

Carbon dioxide reacts with lime water $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$ to form salt ${\mathrm{CaCO}}_3$ and water as-
$\underset{\mathrm{base}}{\mathrm{Ca}{\left(\mathrm{OH}\right)}_2}+{\mathrm{CO}}_2\to \underset{\mathrm{salt}}{{\mathrm{CaCO}}_3}+\underset{\mathrm{water}}{{\mathrm{H}}_2\mathrm{O}}$
Indicate the nature of ${\mathrm{CO}}_2$. What will be the general nature of non-metallic oxides?

Write the reaction between sodium hydroxide and sulphur dioxide $\left({\mathrm{SO}}_2\right)$.

What will happen when ${\mathrm{CO}}_2$ is passed into water. Write the chemical equation.

Write the reaction between water and sulphur dioxide.

Give the definition of a base.

Define acids.

Give the definition of acidic oxides.