Embibe Experts Solutions for Chapter: The s-block Elements, Exercise 3: Level 3

Which one of the following carbonates is unstable in air and is kept in ${\mathrm{CO}}_2$ atmosphere to avoid decomposition?

Which of the following is the strongest base?

Aqueous solution of $\mathrm{NaCl}$ is:

Aqueous solution of ${\mathrm{BeCl}}_2$ is:
 

$\mathrm{Ca}+{\mathrm{H}}_2⟶\left[\mathrm{X}\right]\stackrel{+{\mathrm{H}}_2\mathrm{O}}{⟶}\left[\mathrm{Y}\right]+\left[\mathrm{Z}\right]$ 

The total number of atoms in one molecule or formula unit of $\left[\mathrm{Y}\right] \& \left[\mathrm{Z}\right]$ is _____.

${\mathrm{CaCl}}_2+{\mathrm{H}}_2{\mathrm{SO}}_4\underset{-\mathrm{HCl}}{\stackrel{\left(\mathrm{p}\right)}{⟶}}{\mathrm{CaSO}}_4·2{\mathrm{H}}_2\mathrm{O}\stackrel{\left(\mathrm{q}\right)}{⟶}\left(\mathrm{r}\right)\stackrel{>393 \mathrm{K}}{⟶}\left(\mathrm{s}\right)$

Which of the following option describes the products, reactants and reaction conditions.

Which of the following statement is incorrect?

Among the given carbonates / bicarbonates, find the value of $\left(\mathrm{x}+\mathrm{y}+\mathrm{z}\right)$

${\mathrm{KHCO}}_3, {\mathrm{NaHCO}}_3, {\mathrm{CaCO}}_3, \mathrm{Ca}{\left({\mathrm{HCO}}_3\right)}_2, {\mathrm{K}}_2{\mathrm{CO}}_3$ and $\mathrm{Mg}{\left({\mathrm{HCO}}_3\right)}_2$

no. of compounds almost insoluble in water $=\mathrm{x}$

no. of compound which liberate ${\mathrm{CO}}_2$ on reaction with $\mathrm{HCl}=\mathrm{z}$

no. of compounds that easily undergo thermal decomposition $=\mathrm{y}$