Read the following statements

i) Crystals of NaOH are deliquescent

ii) The by product formed in Solvay process is CaCl₂

iii) NaHCO₃ is a mild antiseptic for skin infection

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all are correct

i and ii are correct

i and iii are correct

only iii are correct

answer is D.

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Detailed Solution

The substance which easily absorbs the moisture from the atmosphere are said to be deliquescent substances.
High degree of hygroscopic nature of a substance is said to deliguescent
Solvay process:
NH₃ + CO₂ + H₂O → NH₄HCO₃
NH₄HCO₃ + NaCl → NH₄Cl + NaHCO₃

2 {NaHCO}_{3} \overset{∆}{\to} {Na}_{2} {CO}_{3} + H_{2} O

The ammonia is regenerated by treating the by-product NH₄Cl with slaked lime [Ca(OH)₂]
2NH₄Cl + Ca(OH)₂ → 2NH₃ + CaCl₂ + 2H₂O
→ NaHCO₃ is used as a mild antiseptic agent for skin infection.

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