Consider the following reactions of three unidentified metals P, Q

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

Consider the following reactions of three unidentified metals P, Q, and R:

\text{PCl}_2\text{(aq)}+2\text{Q(s)}\rightarrow\text{P(s)}+2\text{QCl(aq)}

\text{RCl}_2\text{(aq)}+2\text{Q(s)}\rightarrow\text{R(s)}+2\text{QCl(aq)}

\text{RCl}_2\text{(aq)}+2\text{P(s)}\rightarrow\text{No reaction}

Deduce the order of increasing reactivity of the metals. (1)

\text{P}<\text{Q}<\text{R}

(2)

\text{P}<\text{R}<\text{Q}

(3)

\text{R}<\text{P}<\text{Q}

(4)

\text{Q}<\text{R}<\text{P}