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Statement 1: ${Na}_{2} {SO}_{4}$ can be used as the starting material for the preparation of sodium carbonate and sodium hydroxide.
Statement 2: Sodium hydroxide is prepared by the treatment of milk of lime with sodium carbonate.

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Both statements 1 and 2 are correct

Statement 1 is correct and statement 2 is incorrect

Statement 1 is incorrect and statement 2 is correct

Both statements 1 and 2 are incorrect

answer is A.

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Detailed Solution

Statement 1 :

$\underset{Liblanc process}{\underset{⏟}{{Na}_{2} {SO}_{4} + 4 C + {CaCO}_{3}}} \overset{∆}{\to} \underset{black ash}{\underset{⏟}{{Na}_{2} {CO}_{3} + CaS + 4 CO}}$

${Na}_{2} {CO}_{3} + Ca {(OH)}_{2} (milk of lime) \overset{}{\to} 2 NaOH + {CaCO}_{3}$

Statement 2 : True statement.

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