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13 questions from this quiz
Positive ions
Bright yellow
Potassium
Green
Orange-red
It shows no colour in flame
Blue
Brown
Mg2+Mg^{2+}Mg2+, Ca2+Ca^{2+}Ca2+, Al3+Al^{3+}Al3+
It dissolves
No, both form white precipitates
They are transition metals
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