Question

Permutit is the name given to:

• A. silicate of calcium and sodium
• B. hydrated silicate of aluminium and sodium
• C. anhydrous silicates of calcium and magnesium
• D. silicates of calcium and sodium

Answer 1

The correct option is B

hydrated silicate of aluminium and sodium

Permutit is a complex organic salt having chemical formula ${\text{Na}}_2{\text{Al}}_2{\text{Si}}_2{\text{O}}_8.{\text{xH}}_2\text{O}$. It is a synthetic zeolite. It is used in ion exchange method for softening of hard water.