Question

the metal reacts with dilute hydrocloric acid to form a gas Y . the metal also reacts with sodium hydroxide solution to form same gas Y when a lighted matchstick is brought near it,this gas burns with a pop sound
a) name 2 metals which could behave like X
b) name the gasY

Answer 1

x can be zinc,iron and y is hydrogen gas

Answer 2

a) the two metals can be sodium, and potassium .

b) the gas that is produced - HYDROGEN .