Question

Match the following items in column I with the corresponding items in column II.

Column I		Column II
(i)	$Na_2CO_3·10 H_2O $	(P)	Portland cement ingredient
(ii)	$Mg(HCO_3)_2$	(Q)	Castner-Keller process
(iii)	$NaOH$	(R)	Solvay process
(iv)	$Ca_3Al_2O_6$	(S)	Temporary hardness

• A. $(i)\to(C); (ii)\to(B); (iii)\to(D); (iv)\to(A)$
• B. $(i)\to(C); (ii)\to(D); (iii)\to(B); (iv)\to(A)$
• C. $(i)\to(D); (ii)\to(A); (iii)\to(B); (iv)\to(C)$
• D. $(i)\to(B); (ii)\to(C); (iii)\to(A); (iv)\to(D)$

Answer 1

Answer: (B)

$Na _2 CO _3 \cdot 10 H _2 O \longrightarrow$ Solvay process
$Mg \left( HCO _3\right)_2 \longrightarrow$ Temporary hardness
$NaOH \longrightarrow$ Castner-kellner cell
$Ca _3 Al _2 O _6 \longrightarrow$ Portland cement