Multiple Choice Question Answer III — task. Science CBSE, Class 10.

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1. When sodium reacts with cold water, then the product formed will be-

\(Na_2O\)
\(NaOH\)
\(Na_2CO_3\)
All of these

2. What is the decreasing order of reactivity of following metals ?
Na, Al, Cu, Ag, Fe

K > Na > AI > Fe > Ag > Cu
K > Na > AI > Fe > Cu > Ag
K > Na > AI > Cu > Fe > Ag
Na > K > AI > Cu > Ag > Fe

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