S-block elements practice · Mixed difficulty

An alkaline earth metal $M$ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide $MO$ is very stable to heat and does not have rock-salt structure. $M$ is

The product obtained on fusion of$\mathrm{BaS}{\mathrm{O}_4}$ and $\mathrm{N}{\mathrm{a}_2}\mathrm{C}{\mathrm{O}_3}$ is

Choose the correct statement(s)
(A) Beryllium oxide is purely acidic in nature.
(B) Beryllium carbonate is kept in the atmosphere of $CO_2.$
(C) Beryllium sulphate is readily soluble in water.
(D) Beryllium shows anomalous behaviour.
Choose the correct answer from the options given
below:

Incorrect match among the following is

Assertion: $s$-Block elements do not occur free in nature.

Reason: $s$-Block elements are highly electropositive in nature.

One of the elements present in carnallite shows flame colouration. The colour of the flame is

Which of the following sulphates have the highest solubility in water?

In comparison to the zeolite process for the removal of permanent hardness, the synthetic resins method is

Which compound strongly absorb ${CO}_2$ ?

Barium burns in air to form

Select the correct statement among the following

Which of the following alkali metal ions has lowest ionic mobility in aqueous solution

Which alkaline earth metal forms complex salts?

Which of the following reaction does not liberate gaseous product?

Black ash is:

Assertion (A) : $\mathrm{Li}$ is used in photocells.

Reason (R) : $Cs$ has lower ionisation energy than $\mathrm{Li}$.

Salt with which one of the following cation produce yellow colour precipitate with potassium chromate

Which represents nitrolime?

A white solid reacts with dil. $\mathrm{HCl}$ to give colourless gas that decolourises aqueous bromine. The solid is most likely to be:

The element with atomic number 56 belongs to

s-block element which cannot be qualitatively confirmed by the flame test is

Hypo is used in:

Assertion (A): ${Li}^{+}$forms series of trihydrates ${LiX} \cdot 3 {H}_2 {O}\left[X={Cl}, {Br}, {I}, {ClO}_2, {ClO}_4, {MnO}_4, {NO}_3, {BF}_4\right)$

Reason (R) : This is due to its smaller size $\left({Li}^{+}\right)$and highest ion dipole interaction.

The electrolyte employed in the extraction of sodium by Down’s electrolysis method is:

Lithopone is

In the following reaction,

$\mathrm{NaOH} + \mathrm{S} \to A + \mathrm{N}{\mathrm{a}_2}\mathrm{S} + {\mathrm{H}_2}\mathrm{O};A\mathrm{is}$

Number of elements which give flame test from following

$\mathrm{Sr}, \mathrm{Cu}, \mathrm{Co}, \mathrm{Ca}, \mathrm{Ni}, \mathrm{Fe}$

Which of the following metals can be extracted through alkali leaching technique?

Which is not correctly matched?

(1) Basic strength of oxides:

${Cs}_2{O} < {Rb}_2{O} < {K}_2{O} < {Na}_2{O} < {Li}_2{O}$

(2) Stability of peroxides:

${Na}_2{O}_2 < {K}_2{O}_2 < {Rb}_2{O}_2 < {Cs}_2{O}_2$

(3) Stability of bicarbonates:

${LiHCO}_3 < {NaHCO}_3 < {KHCO}_3 < {RbHCO}_3 < {CsHCO}_3$

(4) Melting point : ${NaF} < {NaCl} < {NaBr} < {NaI}$

What are the metal ions present in carnallite?