Which of the following pairs of solutions will produce a precipitate when mixed?

Which of the following pairs of solutions will produce a precipitate when mixed?

A Pb(NO₃)_2(aq) and NaCI_(aq)
B MgSO_4(aq) and HCI_(aq)
C ZnCI_2(aq) and NaSO_4(aq)
D NaOH_(aq) and HNO_3(aq)

waec 2005 chemistry

The correct answer is A. Pb(NO₃)_2(aq) and NaCI_(aq)

No explanation given

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