Question

No chemical reactions when low reactive metal react with high reactive metal salt give reason

Answer 1

because it can't displace high reactive metal

and less reactive metals are more stable than high reactive metal because of that less reactive metal not react with high reactive salt solution.

Answer 2

Caesium, the most reactive metal in the periodic table, reacts extremely violently – hence why it can't be demonstrated in a classroom! This can be compared to other common metals, such as iron and copper, which produce no reaction when dropped into water.