Q.
Action of heat along with mixing of Sodium hydrogen phosphate is used to test
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a
Ca2+
b
Cu2+
c
Mg2+
d
Na+
answer is C.
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Detailed Solution
Take water extract and add 3-4 ml of magnesium mixture and wait for 5 minutes. A white ppt confirms Na2HPO4+MgNO32+NH3→MgNH4PO4↓+2NaNO3 White
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