Question

Match the following items in column I with the corresponding items in column II.
Column I Column II
I. Na₂CO₃ . 10 H₂O A. Portland cement ingredient II. Mg (HCO₃)₂ B. Castner – Kellner process III. NaOH C. Solvay process IV. Ca₃AI₂O₆ D. Temporary hardness (A) I – B, II – C, III – A, IV – D (B) I – C, II – B, III – D, IV – A (C) I – D, II – A, III – B, IV – C (D) I – C, II – D, III – B, IV – A

Answer 1

Answer:

Na2 CO 3 .10H2 O→ Solvay process

Mg(HCO3 ) 2 → Temporary hardness as it is bicarbonate salt of Mg.

NaOH→ Castner - Kellner method is used to produce NaOH by electrolysis of aqueous NaCl.

Ca 3 Al  2 O 6 → Portland cement ingredient II.

Answer 2

Answer:

1. Solvay process
2. temporary hardness
3. Portland cement
4. Castener-Kellner method

The Solvay process or ammonia-soda process is the major industrial process for the production of sodium carbonate. The ammonia-soda process was developed into its modern form by the Belgian chemist Ernest Solvay during the 1860s. The ingredients for this are readily available and inexpensive: salt brine and limestone.