Question

How can we test the below gases 1. oxygen 2. carbon dioxide 3. hydrogen

Answer 1

carbon dioxide turns lime water milky

hydrogen produces pop sound when placed near a burning candle

oxygen: when it is placed near burning candle, the intensity of flame increases.

Answer 2

i cant tell of oxygen and hydrogen as i am in junior class but
In carbon dioxide i can tell
Carbon Dioxide- It can turn lime water milky