s-Block Elements

LIST-I contains compounds and LIST-II contains reactions

Match each compound in LIST-I with its formation reaction(s) in LIST-II, and choose the correct option

Which of the following statements are correct ?

(A) Both LiCl and $\mathrm{MgCl_2}$ are soluble in ethanol.

(B) The oxides $\mathrm{Li_2O}$ and MgO combine with excess of oxygen to give superoxide.

(C) LiF is less soluble in water than other alkali metal fluorides.

(D) $\mathrm{Li_2O}$ is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below :

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct ?

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution ?

The correct order of melting point is :

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

$\mathrm{BeCl_2}$ reacts with $\mathrm{LiAlH_4}$ to give :

BeO reacts with HF in presence of ammonia to give [A] which on thermal decomposition produces [B] and ammonium fluoride. Oxidation state of Be in [A] is ______.

Match List - I with List - II.

Choose the most appropriate answer from the options given below :

Match List - I with List - II.

Choose the most appropriate answer from the options given below :

Given below are two statements.

• Statement I: In $\mathrm{CuSO_4\cdot5H_2O}$, Cu-O bonds are present.

• Statement II: In $\mathrm{CuSO_4\cdot5H_2O}$, ligands coordinating with Cu(II) ion are O-and S-based ligands.

In the light of the above statements, choose the correct answer from the options given below.

Amongst baking soda, caustic soda and washing soda, carbonate anion is present in

Correct statement about alkali metal oxides is

Choose the correct order of density of the alkali metals :

The correct order of density is

Reaction of $\mathrm{BeCl_2}$ with $\mathrm{LiAlH_4}$ gives :

(A) $\mathrm{AlCl_3}$

(B) $\mathrm{BeH_2}$

(C) LiH

(D) LiCl

(E) $\mathrm{BeAlH_4}$

Choose the correct answer from options given below :

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: LiF is sparingly soluble in water.

Reason R: The ionic radius of $\mathrm{Li^+}$ ion is smallest among its group members, hence has least hydration enthalpy.

In the light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements.

Statement I: The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.

Statement II: Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions.

In the light of the above statements, choose the correct answer from the options given below.

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is :