Two colourless gases, P and Q, were collected in separate jars after different substances were burned in air.
The gases were dissolved in water and tested using litmus paper. The observations are shown below.
| Gas | Observation after Dissolving in Water | Effect on Litmus paper |
| P | Formed a solution | Red litmus turned blue |
| Q | Formed a solution | Blue litmus turned red |
Go through the case carefully and answer the given questions.
1. What can be concluded about the solution formed by Gas P? -
2. Gas P was most likely produced from the burning of a ______. -
3. Which observation directly indicates that Gas Q forms an acidic solution? -
4. Which conclusion can be drawn from the investigation? -