Question

2 ml of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube when the contact content are formed a gas evolved which is bubbled through a soap solution before testing write the chemical write the equation of the chemical reaction involved and the test to detect the gas name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid

Answer 1

Zn +2Naoh =2Na +ZnO2+ H2
Hydrogen gas evolve in this raction
we test the evolution of hydrogen by lightning matchstick and pop sound produce
Zn +2Hcl= Zncl2 + h2