NEET Chemistry Hydrogen Questions Solved


Exhausted permutite does not contain ............ ion –

(A) Na+                                      

(B) Mg2+

(C) Al3+                                    

(D) Si4+

(A).   Permutite is sodium aluminium silicate. The Na+ ions are ionisable. So, during use, these

         Na+ ions are exchanged with Ca2+, Mg2+, etc. present in hard water.

            Na+ Al-silicate +Ca2+ aq              Ca Al-silicate2 + 2Na+ aq

Difficulty Level:

  • 35%
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  • 14%
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