Question

a student added dil hcl to a test tube contaning zinc granules,1 .a gas evolved which burnt with a pop sound
2 .the zinc surface become dull and black
3 .the solution remains colourless
4 .the solution become green in colour ​

Answer 1

Answer:

1.hydregen gas is evolved

2.because ZnCl² is formed and it is a salt...

3....

4....

don't know 3 and 4th...

Answer 2

The solution remains colourless (3)