S-block elements practice · Mixed difficulty

The compound which is insoluble in hot water and $\mathrm{N}{\mathrm{H}_3}$ is:

Which gives apple green colour in fireworks?

The molecular formula of Plaster of paris is:

Assertion (A) : Divalent compounds of alkaline earth metals are diamagnetic.

Reason (R) : $M^{2+}$ ions of group 2 have noble gas configuration.

The gas evolved on heating $\mathrm{CaF}_2$ and $\mathrm{SiO}_2$ with concentrated $\mathrm{H}_2 \mathrm{SO}_4$, on hydrolysis gives a white gelatinous precipitate. The precipitate is

Which of the following reaction is correct?

What is the correct order of density of IIA group :

How $N{H_3}$ is recovered in Solvay process?

The aqueous solution of Lithium salts are poor conductors of electricity rather than other alkali metals because of

Identify the incorrect statement from the following

A metal $X$ on heating in nitrogen gas gives $Y . Y$ on treatment with ${H}_2 {O}$ gives a colourless gas which when passed through ${CuSO}_4$ solution gives a blue colour, ${Y}$ is

Which among the following elements has the tendency to form covalent compounds.

Lithopone is a mixture of:

Which order is NOT correct

If $X({OH}>{Y}({OH})$ (acidic strength) ' $X$ ' $\&$ ' $Y$ ' both belong to same group then select the correct statement.

Glauber’s salt is

The most electropositive element in alkali metals, is

Sodium hydride $(\mathrm{NaH})$ when dissolved in water produces:

Which is quick lime?

Soda lime is

Chlorine cannot displace

A: The first elements of I and II groups, lithium and beryllium differ in some of the chemical properties with other elements of their respective groups.

R: The first element of every group is very small in size, possesses high electronegative value and has only '$S$' and '$P$' orbitals in its valence orbital.

A: The sum of $1^{\text {st }}$ and $2^{\text {nd }}$ ionization energy values of an alkaline earth metal is very high, but that metal exists in $M^{+2}$ cationic state only in its compounds.

R: The hydration energy of an alakline earth metal cation is more than its second ionization energy.

Causticisation is a process in which

The value of $n$ in the molecular formula $Be{}_n^{}\mathrm{A}{\mathrm{I}_2}\mathrm{S}{\mathrm{i}_6}{\mathrm{O}_{18}}$ is

Which of the following statement is false?

Dead burnt is:

$(X),(Y),(Z)$ are elements in the third period. Oxide of $(X)$ is ionic, that of $(Y)$ is amphoteric, and of $(Z)$ a giant molecule. $(X),(Y)$ and $(Z)$ will have atomic numbers in the order:

On heating which of the following releases $C{O_2}$ most easily

Least abundant metal in IIA group is: