LIST-I contains compounds and LIST-II contains reactions. LIST- I LIST-II --- --- (I) \!\! \!\! H 2 O 2 (P) \!\! \!\! Mg ( HC O 3 ) 2 + Ca ( OH ) 2 to (II) \!\! \!\! Mg ( OH ) 2 (Q) \!\! \!\! Ba O 2 + H 2 S O 4 to (III) \!\! \!\! BaC l 2 (R) Ca ( OH ) 2 + MgC l 2 to (IV) CaC O 3 (S) Ba O 2 + HCl to (T) begin matrix Ca ( HC O 3 ) 2 +Ca (OH) 2 to \ ( T ) \\end matrix Match each compound in LIST-I with its formation reaction(s) in LIST-II, and choose the correct option

I rightarrow Q ; II rightarrow R ; III rightarrow S ; IV rightarrow P

I rightarrow Q; II rightarrow P ; III rightarrow S ; IV rightarrow R

I rightarrow T ; II rightarrow P ; III rightarrow Q ; IV rightarrow R

I rightarrow T ; II rightarrow R ; III rightarrow Q ; IV rightarrow P

Chemistry · Alkaline Earth Metals - Group 2

JEE Advanced 2022 — Paper 1 — Question 46

LIST-I contains compounds and LIST-II contains reactions.

LIST- I	LIST-II
(I) $\text{ }\!\!~\!\!\text{ }{{\text{H}}_{2}}{{\text{O}}_{2}}$	(P) $\text{ }\!\!~\!\!\text{ Mg}{{\left( \text{HC}{{\text{O}}_{3}} \right)}_{2}}+\text{Ca}{{(\text{OH})}_{2}}\to$
(II) $\text{ }\!\!~\!\!\text{ Mg}{{(\text{OH})}_{2}}$	(Q) $\text{ }\!\!~\!\!\text{ Ba}{{\text{O}}_{2}}+{{\text{H}}_{2}}\text{S}{{\text{O}}_{4}}\to$
(III) $\text{ }\!\!~\!\!\text{ BaC}{{\text{l}}_{2}}$	(R) $\text{Ca}{{(\text{OH})}_{2}}+\text{MgC}{{\text{l}}_{2}}\to$
(IV) $\text{CaC}{{\text{O}}_{3}}$	(S) $\text{Ba}{{\text{O}}_{2}}+\text{HCl}\to$
	(T) $\begin{matrix}Ca{{\left( \text{HC}{{\text{O}}_{3}} \right)}_{2}}+Ca{{(OH)}_{2}}\to \#\left( T \right) \\\end{matrix}$

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

Option A:
I $\rightarrow$ Q; II $\rightarrow \mathrm{P} ;$ III $\rightarrow \mathrm{S} ;$ IV $\rightarrow \mathrm{R}$
Option B:
I $\rightarrow \mathrm{T}$ ; II $\rightarrow \mathrm{P}$ ; III $\rightarrow \mathrm{Q}$ ; IV $\rightarrow \mathrm{R}$
Option C:
I $\rightarrow \mathrm{T}$ ; II $\rightarrow \mathrm{R}$ ; III $\rightarrow \mathrm{Q}$ ; IV $\rightarrow \mathrm{P}$
Option D:
I $\rightarrow \mathrm{Q}$ ; II $\rightarrow \mathrm{R}$ ; III $\rightarrow \mathrm{S}$ ; IV $\rightarrow \mathrm{P}$
Correct

Answer: D

Step-by-step solution

$\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}+2 \mathrm{Ca}(\mathrm{OH})_{2} \longrightarrow \mathrm{Mg}(\mathrm{OH})_{2} \downarrow+2 \mathrm{CaCO}_{3} \downarrow+2 \mathrm{H}_{2} \mathrm{O}$

$\mathrm{BaO}_{2}+\mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{BaSO}_{4} \downarrow+\mathrm{H}_{2} \mathrm{O}_{2}$ $\mathrm{Ca}(\mathrm{OH})_{2}+\mathrm{MgCl}_{2} \longrightarrow \mathrm{Mg}(\mathrm{OH})_{2} \downarrow+\mathrm{CaCl}_{2}$ $\mathrm{BaO}_{2}+2 \mathrm{HCl} \longrightarrow \mathrm{BaCl}_{2}+\mathrm{H}_{2} \mathrm{O}_{2}$

\begin{aligned} & \mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}+\mathrm{Ca}(\mathrm{OH})_{2} \longrightarrow 2 \mathrm{CaCO}_{3} \downarrow+\mathrm{H}_{2} \mathrm{O} & \mathrm{I} \rightarrow \mathrm{Q}, \mathrm{~S} ; \mathrm{II} \rightarrow \mathrm{P}, \mathrm{R} ; \mathrm{III} \rightarrow \mathrm{~S} ; \mathrm{IV} \rightarrow \mathrm{P}, \mathrm{~T} \end{aligned}

Answer key and solution verified before publishing.

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Exam: JEE Advanced 2022
Paper: Paper 1
Subject: Chemistry
Chapter: Alkaline Earth Metals - Group 2
Topic: Compounds of Different Group 2 Metals - Preparation and Properties