

MCQOPTIONS
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1. |
Which of the following pairs of ions when mixed in dilute solutions may give precipitate [CPMT 1976; NCERT 1987; Kurukshetra CEE 1998] |
A. | \[N{{a}^{+}},SO_{4}^{2-}\] |
B. | \[NH_{4}^{+},CO_{3}^{2-}\] |
C. | \[N{{a}^{+}},{{S}^{2-}}\] |
D. | \[F{{e}^{3+}},PO_{4}^{3-}\] |
Answer» E. | |