Question

An alloy reacted with dilute hydrochloric acid to produce a gas which ‘pops’ a lighted splint. The residue reacted with dilute nitric acid to form a blue solution

Answer 1

Answer:

hydrogen

Explanation:

hydrogen is an element in which take a pop sound

Answer 2

Explanation:

Reactive metal is a group of metal elements that can form a reaction with acids, water. The metal activity series is used to study displacement reactions or replacement reactions.

Hydrogen gas is evolved when hydrochloric acid reacts with a reactive metal.

Fe+H2SO4→FeSO4+H2