Inorganic

Metal + dil. HCl -A
A + Na₂HPO₄ / NH₄OH = B (white ppt)
A + HCl (heated) = C
C on electrolysis in presence of NaCl gives metal M

The compound A is
1. CaCl2 . 2H2O
2. Na2SO4 . 10 H2O
3. MgCl2 . 6H2O
4. CaSO4 . 2H2O

The compound B is

1. Mg(NH4) PO4
2. Ca3(PO4)2 + NH3
3. Na(NH4) HPO4
4. Both (1) & (2)

The compound C and metal M are

1. NaCl, Na
2. CaCl2, Ca
3. MgCl2, Mg
4. BeCl2, Be

1 Answers

see the second reaction is giving the hint..the second reaction is for the precipitation of Mg²⁺
Ans 1 â†’ 3
Ans 2 â†’ 1
Ans 3 â†’ 3

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