Question

What do u observe when zinc metal is added to dilute sulphuric acid and a burning candle is brought near the mouth of the test tube?

Answer 1

When zinc is added to dilute sulphuric acid, bubbles can be observed in the test tube, indicating evolution of a gas.

When a burning candle is brought near the mouth of the test tube it burns with a pop sound. This tells us that hydrogen gas has been released.

Zn + H2SO4 ⇒ ZnSO4 + H2

Answer 2

Hey mate!

Zn + H2SO4 ——> ZnSO4 + H2

Observation: Bubbles are seen in the test tube.

When we bring a burning candle near the mouth of the test tube the gas burns with a pop sound which implies the gas is hydrogen